In the case of an archbishop, or archvillian it is pronounced arch.

In the case of archetype, it is prounounced ark-e-type

In the case of an archenemy I think you would say ark - enemy

Is it simply the fact of a vowel following the arch that turns it from arch to ark?

  • 1
    Archimedes vs Archibald, archer vs archeology and so on. It would seem arch+vowel=ark is not archetypical. But it does seem like arch+consonant=arch is probably true, I can't think of any that are pronounced ark.
    – Frank
    Aug 13, 2014 at 7:19
  • @Frank 'Archangel' seems to give further credence to the vowel theory. The first four examples you choose are not of the prefix 'arch', they are merely words which start ARCH. That may make them different. Sticking strictly with prefix arch I can't think of a case with a following vowel where you would pronounce the arch sound.
    – WS2
    Aug 13, 2014 at 7:37
  • 2
    I have mostly seen it written 'arch-enemy', and have always pronounced it -- and heard others pronounce it -- accordingly (i.e. with a soft 'ch' sound, and not with a hard 'k' sound). 'Arch-fiend' (which has a similar meaning) is also pronounced with a soft 'ch'.
    – Erik Kowal
    Aug 13, 2014 at 7:47
  • Arch as a prefix - I didn't read the question well enough. archangel (the uber angels as it were) is pronounced ark angel while arch-enemy is hyphenated and is pronounced (by me at least) arch enemy. So yes, you might well be right, arch meaning the best, the greatest, the original does seem to be ark when followed by a vowel and when followed by a consonant (it's often a hyphen-consonant pair) is pronounced arch. I'll need to actually look at a list of words to find any that don't follow 'the rule'.
    – Frank
    Aug 13, 2014 at 7:51
  • 1
    If you do a search for archimperialist it's mentioned in a few places - it's not an archi word - and seems to be written just as often as arch-imperialist as it is without the hyphen. Seems like quite a recent coining, and hardly robust evidence against.
    – Frank
    Aug 13, 2014 at 8:07

1 Answer 1


TLDR: Although something of a ‘rule’ for this does exist to say /artʃ/, it has several exceptions handed down to us from a Latinized transliteration of Greek chi where the /k/ sound persists even now. So you’ll usually guess right, but to be sure, you really have to look it up.

The prefix arch- meaning the head, chief, principal, or high something, is always pronounced /artʃ/ save in archangel alone.

The other words that have a /k/ there (like architecture and archipelago and archaeologist) are not created with the prefix arch-. (But some were, like archetype).

The OED explains what archangel is an exception to this rule with these words, nothing the parenthesized section at the end:


/ɑrtʃ/; exc. in archangel, prefix: repr. Gr. ἀρχι-, ἀρχ’-, comb. form of ἀρχ-ός chief (cogn. w. ἄρχ-ειν to begin, take the lead), as in ἀρχι-διάκονος chief-minister, ἀρχι-επίσκοπος chief-bishop, ἀρχ-άγγελος chief-angel. Hence in later L. archidiāconus, archiepiscopus, archangelus; in OF. arce-archediacne, arce-archevesque, arc-archangele. (In L. the ch was treated as c; hence, in Romanic, it remained = k in archangelus; in other words, it became in It. arce-, arci-, Pr., Sp., Pg. arce, OF. arce-, later arche-; whence G. erz-, Du. aarts-.)

The OED actually goes on for miles and miles, but the important part about the k is covered in the quoted part above. Here’s the next paragraph following just to add more history to the matter:

In OE. at first translated by héah- high (héah-diacon, héah-biscop, héah-ȩngel, etc.), but also at length adopted from L. as arce-, ærce-, ȩrce- (? orig. arci-), in ȩrce-diacon, ȩrce-biscop, ȩrce-stól arch-see, ȩrce-hád archiepiscopal dignity. The OE. ȩrce-, arce-, became in ME. erche-, arche-, the latter coinciding with OF. arche-, whence also archangel was added. From these, in later times, arch- became a living formative, prefixable to any name of office. The same happened in med.L. and most mod. langs.; hence many of the Eng. examples, e.g. archduke, are adaptations of foreign titles. Since the 16th c., arch- has been freely prefixed to names of agents and appellatives (like arci- in Ital., and archi- in French, as archifou, archipédant); in a few instances also to appellations of things, and occasionally even to adjectives. Finally, from its faculty of being prefixed to any appellative, arch has gradually come to be a separate adjective; see prec. word. (In modern literary words from Gr., the prefix is, in Eng., as in all the Romance langs., archi- q.v.) In pronunciation, the compounds of arch- have two accents, either of which may be the stronger, according to emphasis, as in right hand. But established compounds, as archangel, -bishop, -deacon, -duke, tend to have the main stress on arch-, especially when they are prefixed to a name, as, the ˈA.rchduke ˈCha.rles, ˈA.rchbishop ˈCra.nmer. As a prefix the usual sense is ‘chief, principal, high, leading, prime,’ occasionally ‘first in time, original, initial,’ but in modern use it is chiefly prefixed intensively to words of bad or odious sense, as in arch-traitor, arch-enemy, arch-rogue.


Besides archangel, other exceptions include archetype and archespore; there are a few others.

Under its entry for arch- prefix, The OED goes on to list 107 words with a leading arch- in them, which seem to all follow its rule that these be pronounced the normal /arch/ way:

arch‑agitator, arch‑antiquary, arch‑apostle, arch‑artist, arch‑beacon, arch‑beadle, arch‑botcher, arch‑boutefeu, arch‑buffoon, arch‑builder, arch‑butler, arch‑charlatan, arch‑cheater, arch‑chemic, arch‑chief, arch‑christendom, arch‑city, arch‑consoler, arch‑conspirator, arch‑corrupter, arch‑cosener, arch‑criminal, arch‑critic, arch‑dapifer, arch‑deceiver, arch‑defender, arch‑depredator, arch‑despot, arch‑devil, arch‑diplomatist, arch‑dissembler, arch‑disturber, arch‑divine, arch‑dogmatist, arch‑dolt, arch‑earl, arch‑essence, arch‑exorcist, arch‑father, arch‑felon, arch‑fire, arch‑fool, arch‑form, arch‑founder, arch‑friend, arch‑god, arch‑gomeril, arch‑heart, arch‑host, arch‑house, arch‑humbug, arch‑hypocrite, arch‑infamy, arch‑informer, arch‑jockey, arch‑knave, arch‑leader, arch‑lexicographer, arch‑liar, arch‑machine, arch‑mediocrity, arch‑messenger, arch‑metaphysician, arch‑mistress, arch‑mock, arch‑mockery, arch‑mystagogue, arch‑noble, arch‑pall, arch‑philosopher, arch‑piece, arch‑pillar, arch‑plagiary, arch‑player, arch‑plotter, arch‑plunderer, arch‑politician, arch‑practice, arch‑pretender, arch‑prophet, arch‑protestant, arch‑puritan, arch‑rationalist, arch‑representative, arch‑robber, arch‑rogue, arch‑saint, arch‑scandalmonger, arch‑sceptic, arch‑scoundrel, arch‑sea, arch‑seducer, arch‑see, arch‑semipelagian, arch‑sin, arch‑snake, arch‑spy, arch‑synagogue, arch‑tempter, arch‑traitor, arch‑turncoat, arch‑tyrant, arch‑urger, arch‑vagabond, arch‑wag, arch‑wench, arch‑worker.

Unlike words beginning with the arch‑ prefix, which have a /tʃ/, those that have an arch(a)eo‑ or archi‑ prefix, or an ‑archy suffix or ‑arche suffix, have a /k/ there.

The archi- prefix the OED explains as:

L. archi-, Gr. ἀρχι-: see arch-. This form of the prefix is retained in words taken in modern times from Gr. or L., directly or through mod.Fr., and in compounds formed on the model of these. Hence it is sometimes found in the adjectives, etc. belonging to substantives, which, from their earlier introduction, have themselves the form arch-, as archdeacon, archidiaconal, archbishop, archiepiscopal. Some words have both forms, as archi-presbyter, arch-presbyter.

In the list below, you indeed see that archi-presbyter it gives with a /k/ in it, but the other one with the /ʧ/ affricate. There are more of the /k/ ones, but in a few odd cases it is difficult to predict.

I’ve grepped out (grabbed) all the OED headwords with ‹arch› in them and listed their IPA next to them. I prefix each headword with a /k/ or /ʧ/ to make it easier to quickly scan for exceptions; a few unassimilated French terms have just /ʃ/.

(I’ve manually trimmed some of the false positives such as searched.)

I have also rewritten IPA /ɑ˞ː/ as /ar/ to make it clearer for rhotic speakers, who will make that an r-colored vowel instead. If you’re an arrhotic speaker, you will ignore it anyway. :)

     1  k anarchal (adj.)                /əˈnarkəl/
     2  k anarchial (adj.)               /əˈnarkɪəl/
     3  k anarchic (adj.)                /əˈnarkɪk/
     4  k anarchical (adj.)              /əˈnarkɪkəl/
     5  k anarchism (n.)                 /ˈænɚkɪz(ə)m/
     6  k anarchist (adj.)               /ˈænɚkɪst/
     7  k anarchistic (adj.)             /ænarˈkɪstɪk/
     8  k anarchize (v.)                 /ˈænɚkaɪz/
     9  k anarcho-syndicalism (n.)       /æˌnarkoʊ/
    10  k anarchy (n.)                   /ˈænɚkɪ/
    11  k antarchism (n.)                /ˈæntɚkɪz(ə)m/
    12  k antimonarchical (adj.)         /ˌæntɪmoʊˈnarkɪkəl/
    13  k antimonarchist (n.)            /æntɪˈmɒnɚkɪst/
    14  ʧ arch- (prefix)                 /artʃ/
    15  k archæbacterium (adj.)          /arkɪbækˈtɪərɪəm/
    16  k archæo- (adj.)                 /ˌarkiːoʊ-/
    17  k archæoastronomy (adj.)         /ˌarkiːoʊəˈstrɒnəmɪ/
    18  k archæocyte (n.)                /ˈarkiːəsaɪt/
    19  k archæographical (adj.)         /ˌarkiːoʊˈgræfɪkəl/
    20  k archæography (n.)              /arkiːˈɒgrəfɪ/
    21  k archæologer (n.)               /arkiːˈɒlədʒə(r)/
    22  k archæologian (n.)              /ˌarkiːoʊˈloʊdʒɪən/
    23  k archæologic (adj.)             /ˌarkiːoʊˈlɒdʒɪk/
    24  k archæologist (n.)              /arkiːˈɒlədʒɪst/
    25  k archæologize (v.)              /arkiːˈɒlədʒaɪz/
    26  k archæologue (n.)               /ˈarkiːəlɒg/
    27  k archæology (n.)                /arkiːˈɒlədʒɪ/
    28  k archæomagnetism (adj.)         /ˌarkiːoʊˈmægnətɪz(ə)m/
    29  k archæometry (adj.)             /arkiːˈɒmɪtrɪ/
    30  k archæopteryx (n.)              /arkiːˈɒptərɪks/
    31  k archaic (adj.)                 /arˈkeɪɪk/
    32  k archaicism (n.)                /arˈkeɪɪsɪz(ə)m/
    33  k archaicist (adj.)              /arˈkeɪɪsɪst/
    34  k archaism (n.)                  /ˈarkeɪɪz(ə)m/
    35  k archaist (n.)                  /ˈarkeɪɪst/
    36  k archaistic (adj.)              /arkeɪˈɪstɪk/
    37  k archaistically (adv.)          /arkeɪˈɪstɪkəlɪ/
    38  k archaize (v.)                  /ˈarkeɪaɪz/
    39  k archangel (n.)                 /ˈarkˈeɪndʒəl/
    40  k archangelic (adj.)             /arkænˈdʒɛlɪk/
    41  k archangelship (n.)             /arkˈeɪndʒəlʃɪp/
    42  ʧ archbishop (adj.)              /ˈartʃˈbɪʃəp/
    43  ʧ archbishopric (n.)             /artʃˈbɪʃəprɪk/
    44  ʧ archdeacon (n.)                /ˈartʃˈdiːkən/
    45  ʧ archdeaconry (n.)              /artʃˈdiːkənrɪ/
    46  ʧ archdiocese (n.)               /ˈartʃˈdaɪəsiːs/
    47  ʧ archducal (adj.)               /artʃˈdjuːkəl/
    48  ʧ archduchess (n.)               /ˈartʃˈdʌtʃɪs/
    49  ʧ archduchy (n.)                 /ˈartʃˈdʌtʃɪ/
    50  ʧ archduke (n.)                  /ˈartʃˈdjuːk/
    51  ʧ archdukedom (n.)               /artʃˈdjuːkdəm/
    52  k archebiosis (n.)               /arkɪbaɪˈoʊsɪs/
    53  ʧ arched (ppl. a.)               /artʃt/
    54  ʧ archegay (n.)                  /ˈartʃɪgɑːɪ/
    55  k archegonial (adj.)             /arkɪˈgoʊnɪəl/
    56  k archegonium (n.)               /arkɪˈgoʊnɪəm/
    57  k archelogy (n.)                 /arˈkɛlədʒɪ/
    58  k archenteron (adj.)             /arˈkɛntərɒn/
    59  ʧ archer (n.)                    /ˈartʃə(r)/
    60  ʧ archeress (n.)                 /ˈartʃərɪs/
    61  ʧ archership (n.)                /ˈartʃɚʃɪp/
    62  ʧ archery (n.)                   /ˈartʃərɪ/
    63  ʧ arches (n.)                    /ˈartʃɪz/
    64  k archespore (adj.)              /ˈarkɪspɔə(r)/
    65  k archetypal (adj.)              /arˈkɛtɪpəl/
    66  k archetype (adj.)               /ˈarkɪtaɪp/
    67  k archetypist (n.)               /ˈarkɪtaɪpɪst/
    68  k archeus (n.)                   /arˈkiːəs/
    69  ʧ arch-fiend (n.)                /ˈɑːrtʃˈfiːnd/
    70  ʧ arch-flamen (n.)               /ˈartʃˈfleɪmɛn/
    71  ʧ arch-foe (n.)                  /ˈartʃˈfoʊ/
    72  k archi- (pref.)                 /ˌarkɪ-/
    73  k archiater (n.)                 /arkɪˈeɪtə(r)/
    74  k archibenthal (adj.)            /arkɪˈbɛnθəl/
    75  k archiblast (adj.)              /ˈarkɪblæst/
    76  k archicerebrum (n.)             /arkɪˈsɛrɪbrəm/
    77  k archidiaconal (adj.)           /ˌarkɪdaɪˈækənəl/
    78  k archiepiscopacy (n.)           /ˌarkɪɪˈpɪskəpəsɪ/
    79  k archiepiscopal (adj.)          /-skəpəl/
    80  k archiepiscopate (adj.)         /-skəpeɪt/
    81  k archigony (n.)                 /arˈkɪgənɪ/
    82  ʧ archil (n.)                    /ˈartʃɪl/
    83  k archimage (n.)                 /ˈarkɪmeɪdʒ/
    84  k archimandrite (n.)             /arkɪˈmændraɪt/
    85  k archimime (n.)                 /ˈarkɪˌmaɪm/
    86  ʧ arching (vbl. sb.)             /ˈartʃɪŋ/
    87  ʧ arching (ppl. a.)              /ˈartʃɪŋ/
    88  k archipallium (adj.)            /arkɪˈpælɪəm/
    89  k archipelagian (n.)             /ˌarkɪpɪˈleɪdʒ(ɪ)ən/
    90  k archipelagic (adj.)            /-ˈlædʒɪk/
    91  k archipelago (n.)               /arkɪˈpɛləgoʊ/
    92  k archipelagoed (pa. pple.)      /arkɪˈpɛləgoʊd/
    93  k archiphoneme (adj.)            /ˌarkɪˈfoʊniːm/
    94  k archipresbyteral (adj.)        /ˌarkɪprɛzˈbɪtərəl/
    95  k archipresbyterate (n.)         /ˌarkɪprɛzˈbɪtərət/
    96  k architect (n.)                 /ˈarkɪtɛkt/
    97  k architective (adj.)            /ˈarkɪtɛktɪv/
    98  k architectonic (adj.)           /ˌarkɪtɛkˈtɒnɪk/
    99  k architectress (n.)             /ˈarkɪtɛktrɪs/
   100  k architectural (adj.)           /arkɪˈtɛktjʊərəl/
   101  k architecturalist (n.)          /-ˌɪst/
   102  k architecturalization (n.)      /-aɪˈzeɪʃən/
   103  k architecturalize (v.)          /-ˌaɪz/
   104  k architecture (n.)              /ˈarkɪtɛktjʊə(r)/
   105  k architrave (n.)                /ˈarkɪtreɪv/
   106  k archival (adj.)                /ˈarkɪvəl/
   107  k archive (pl.)                  /ˈarkaɪv/
   108  k archive (v.)                   /ˈarkaɪv/
   109  k archived (ppl.)                /ˈarkaɪvd/
   110  k archivist (n.)                 /ˈarkɪvɪst/
   111  k archivolt (n.)                 /ˈarkɪvoʊlt/
   112  ʧ archlet (n.)                   /ˈartʃlɪt/
   113  ʧ archlute (n.)                  /ˈartʃˈljuːt/
   114  ʧ archly (adv.)                  /ˈartʃlɪ/
   115  ʧ archness (adj.)                /ˈartʃnɪs/
   116  k archology (n.)                 /arˈkɒlədʒɪ/
   117  k archon (n.)                    /ˈarkən/
   118  k archonship (n.)                /ˈarkənʃɪp/
   119  k archontate (n.)                /ˈarkənteɪt/
   120  k archontic (adj.)               /arˈkɒntɪk/
   121  k archosaur (n.)                 /ˈarkoʊsɔː(r)/
   122  k archosaurian (adj.)            /arkoʊˈsɔːrɪən/
   123  ʧ archpresbyter (n.)             /ˈartʃˈprɛzbɪtə(r)/
   124  ʧ archpriest (n.)                /ˈartʃˈpriːst/
   125  ʧ arch-thief (n.)                /ˈartʃˈθiːf/
   126  ʧ archway (n.)                   /ˈartʃweɪ/
   127  ʧ archwise (adv.)                /ˈartʃwaɪz/
   128  ʧ archy (adj.)                   /ˈartʃɪ/
   129  k autarchic (adj.)               /ɔːˈtarkɪk/
   130  k autarchy (n.)                  /ˈɔːtɚkɪ/
   131  k barchan (n.)                   /barˈkɑːn/
   132  k biarchy (pref.)                /ˈbaɪarkɪ/
   133  k chiliarchy (n.)                /ˈkɪlɪarkɪ/
   134  k decarchy (n.)                  /ˈdɛkɚkɪ/
   135  ʧ deep-searching (ppl. a.)       /ˈdiːpˈsɝːtʃɪŋ/
   136  ʃ démarche (n.)                  /demarʃ/
   137  k demarchy (n.)                  /ˈdiːmarkɪ/
   138  k diabolarchy (n.)               /daɪˈæbəlarkɪ/
   139  k diarchal (adj.)                /daɪˈarkəl/
   140  k diarchic (adj.)                /daɪˈarkɪk/
   141  k diarchy (n.)                   /ˈdaɪarkɪ/
   142  k dodecarchy (n.)                /ˈdoʊdɪkarkɪ/
   143  k duarchy (n.)                   /ˈdjuːɚkɪ/
   144  k eparchy (n.)                   /ˈɛpɚkɪ/
   145  k ethnarchy (n.)                 /ˈɛθnarkɪ/
   146  k ethnoarchæology (adj.)         /ˌɛθnoʊarkiːˈɒlədʒɪ/
   147  k exarchate (n.)                 /ˈɛksarkeɪt/
   148  k Exarchist (n.)                 /ˈɛksarkɪst/
   149  ʃ franc-archer (adj.)            /frɑ̃karʃe/
   150  k gerontarchical (adj.)          /ˌdʒɛrənˈtarkɪkəl/
   151  k gynarchy (n.)                  /ˈdʒaɪnarkɪ/
   152  k hamarchy (n.)                  /ˈhæmɚkɪ/
   153  k hecatarchy (n.)                /ˈhɛkətarkɪ/
   154  k hecatontarchy (n.)             /hɛkəˈtɒntarkɪ/
   155  k heptarchy (n.)                 /ˈhɛptarkɪ/
   156  k hierarchal (adj.)              /haɪəˈrarkəl/
   157  k hierarchic (adj.)              /haɪəˈrarkɪk/
   158  k hierarchist (n.)               /ˈhaɪərarkɪst/
   159  k hierarchy (gen.)               /ˈhaɪərarkɪ/
   160  k ichthyarchy (n.)               /ˈɪkθɪarkɪ/
   161  ʧ inarching (vbl. sb.)           /ɪnˈartʃɪŋ/
   162  k kritarchy (n.)                 /ˈkrɪtarkɪ/
   163  ʧ larchen (adj.)                 /ˈlartʃən/
   164  k marchantia (n.)                /marˈkæntɪə/
   165  ʧ marcher (n.)                   /ˈmartʃə(r)/
   166  ʧ marcher (v.)                   /ˈmartʃə(r)/
   167  k marchesa (n.)                  /marˈkeza/
   168  k marchese (n.)                  /marˈkeze/
   169  ʧ marching (vbl. sb.)            /ˈmartʃɪŋ/
   170  ʧ marching (ppl. a.)             /ˈmartʃɪŋ/
   171  k marchioness (n.)               /ˈmarʃənɪs/
   172  k matriarchal (adj.)             /meɪtrɪˈarkəl/
   173  k matriarchate (n.)              /meɪtrɪˈarkət/
   174  k matriarchy (n.)                /ˈmeɪtrɪarkɪ/
   175  k menarche (n.)                  /məˈnarkiː/
   176  k monarchal (adj.)               /məˈnarkəl/
   177  k monarchess (n.)                /ˈmɒnɚkɪs/
   178  k monarchial (adj.)              /məˈnarkɪəl/
   179  k Monarchian (n.)                /məˈnarkɪən/
   180  k monarchic (adj.)               /məˈnarkɪk/
   181  k monarchical (adj.)             /məˈnɑːrkɪkəl/
   182  k monarchism (n.)                /ˈmɒnɚkɪz(ə)m/
   183  k monarchist (n.)                /ˈmɒnɚkɪst/
   184  k monarchistic (adj.)            /mɒnɚˈkɪstɪk/
   185  k monarchize (v.)                /ˈmɒnɚkaɪz/
   186  k monarcho- (adj.)               /məˈnarkoʊ/
   187  k monarchy (adj.)                /ˈmɒnɚkɪ/
   188  k navarchy (n.)                  /ˈneɪvarkɪ/
   189  k nomarchy (n.)                  /ˈnɒmarkɪ/
   190  k octarchy (n.)                  /ˈɒktarkɪ/
   191  k oligarchal (adj.)              /ˈɒlɪgarkəl/
   192  k oligarchic (adj.)              /ɒlɪˈgarkɪk/
   193  k oligarchical (adj.)            /ɒlɪˈgarkɪkəl/
   194  k oligarchism (n.)               /ˈɒlɪgarkɪz(ə)m/
   195  k oligarchization (n.)           /ɒlɪgarkaɪˈzeɪʃən/
   196  k oligarchize (v.)               /ˈɒlɪgarkaɪz/
   197  k oligarchy (n.)                 /ˈɒlɪgarkɪ/
   198  k panarchy (n.)                  /ˈpænɚkɪ/
   199  k paparchy (adj.)                /ˈpeɪpɚkɪ/
   200  k patriarchal (adj.)             /peɪtrɪˈarkəl/
   201  k patriarchate (n.)              /ˈpeɪtrɪarkət/
   202  k patriarchdom (n.)              /ˈpeɪtrɪarkdəm/
   203  k patriarchess (n.)              /ˈpeɪtrɪarkɪs/
   204  k patriarchic (adj.)             /peɪtrɪˈarkɪk/
   205  k patriarchical (adj.)           /peɪtrɪˈarkɪkəl/
   206  k patriarchism (n.)              /ˈpeɪtrɪarkɪz(ə)m/
   207  k Patriarchist (n.)              /ˈpeɪtrɪarkɪst/
   208  k patriarchy (n.)                /ˈpeɪtrɪarkɪ/
   209  k pentarchy (n.)                 /ˈpɛntɚkɪ/
   210  k Petrarchal (adj.)              /pɪˈtrarkəl/
   211  k Plutarchian (adj.)             /pluːˈtarkɪən/
   212  k plutarchy (n.)                 /ˈpluːtɚkɪ/
   213  k pollarchy (n.)                 /ˈpɒlɚkɪ/
   214  k polyarchic (adj.)              /pɒlɪˈarkɪk/
   215  k polyarchism (n.)               /ˈpɒlɪarkɪz(ə)m/
   216  k polyarchy (n.)                 /ˈpɒlɪarkɪ/
   217  k pubarche (n.)                  /pjuːˈbɑrkiː/
   218  k squirearchal (adj.)            /skwaɪəˈrarkəl/
   219  k squirearchy (n.)               /ˈskwaɪərarkɪ/
   220  k stratarchy (n.)                /ˈstrætarkɪ/
   221  k synarchy (n.)                  /ˈsɪnarkɪ/
   222  k tetradarchy (n.)               /ˈtɛtrədarkɪ/
   223  k tetrarchate (n.)               /ˈtɛtrɚkeɪt/
   224  k tetrarchic (adj.)              /tɪˈtrarkɪk/
   225  k tetrarchical (adj.)            /tɪˈtrarkɪkəl/
   226  k tetrarchy (n.)                 /ˈtɛtrarkɪ/
   227  k thearchic (adj.)               /θiːˈarkɪk/
   228  k thearchy (n.)                  /ˈθiːɚkɪ/
   229  k timarchy (n.)                  /ˈtaɪma˞ːkɪ/
   230  k toparchy (n.)                  /ˈtɒpɚkɪ/
   231  k triarchy (n.)                  /ˈtraɪɚkɪ/
   232  k trierarchal (adj.)             /ˈtraɪərarkəl/
   233  k trierarchy (n.)                /ˈtraɪərarkɪ/
  • What about 'archetype'? (pronounced ark-e-type) That follows the archangel rule, doesn't it?
    – WS2
    Aug 13, 2014 at 9:23
  • @WS2 Yes, archetype is /ˈarkɪtaɪp/. The OED also lists archimage (from Spencer) as the trisyllabic /ˈarkɪmeɪdʒ/, first seen in Faerie Queen, although archimagus was a half-century earlier. The OED has no entry for arch-mage, though, which I have always heard as the bisyllabic /ˈartʃmeɪdʒ/. I’ve fished out all the data now, but am having more trouble than I expected in reading an explicitly stated rule or divining one from any pattern I see myself. I’ll update my answer.
    – tchrist
    Aug 13, 2014 at 12:31

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