In Samuel Martin's Reference Grammar of Japanese (1975), the author describes the location of lexical accent on Japanese words using the following terms:

  • Prototonic: The accent is at the beginning of the word.
  • Mesotonic: The accent is somewhere in the middle of the word.
  • Oxytonic: The accent is at the end of the word.

Prototonic and mesotonic seem clear enough to me, literally meaning something like “beginning tone” and “medial tone”. But oxytonic is less obvious to me. It seems like it should mean something like “final tone”, but when I look up oxy- in dictionaries I instead find something like “sharp, acute”.

This is explained somewhat in The Oxford English Dictionary in the definition for oxytone:

oxytone, a. and n. Gram., chiefly Gr. Gram.


Also oxyton.

[ad. Gr. ὀξύτον-ος having the acute accent, f. ὀξυ- sharp, acute + τόνος pitch, tone, accent.]

a. adj. Having an acute accent on the last syllable. b. n. A word so accented.   

So it seems that oxy- refers to an “acute” accent. But I must confess it's still not entirely clear to me. How did this word come to be used for an acute accent on the final syllable specifically? Weren't acute accents used historically on non-final syllables as well? Was there a language where acute accents only fell on final syllables?

In short, how did oxytonic come to mean “final accent” rather than “acute accent”?

  • Don’t forget paroxytonic, proparoxytonic, and anteproparoxytonic.
    – tchrist
    May 21, 2014 at 0:40
  • 1
    @tchrist: Also ginandtonic.
    – Robusto
    May 21, 2014 at 17:20
  • Your question basically boils down to, "why is the final syllable the default location for the acutus in Greek accentuation?". The only partial reason for this that I know is that no other place could reasonably function as the default: one counts the places of accentuation from the end backwards, because the only limits that exist are on the distance of the accent from the last syllable. It can never be farther back than on the third syllable counted from the end, and it can be no farther back than on the second if the last one is a diphthong (I think). So the final syllable is central. May 21, 2014 at 17:47
  • Somewhat off-topic, but I have not seen any recent sources about Japanese phonology operate with stress or accent at all—rather, they deal with upsteps and downsteps, which is a more accurate way of describing Japanese accentual patterns. May 21, 2014 at 18:20
  • @JanusBahsJacquet Standard Japanese has only a phonemic downstep, not an upstep. Pitch accent position is an equivalent description—the downstep occurs after the accented mora, if any. See The Phonology of Japanese (Labrune 2012) for a recent overview.
    – user28567
    May 21, 2014 at 18:49

1 Answer 1


As the OED notes, this is an originally Greek term applicable to Greek grammar primarily. An 1871 Oxford UP abridgement of the Liddell-Scott Greek Lexicon defines it thus:

ὀξύτονος, ον (ὀξύς, τόνος) stretched to a point : sharp, piercing : violent. II. having the acute accent, i.e., accent on the last syllable, oxytone.

Granted, that "i.e." fails to explain the transition in meaning. The full modern Liddell-Scott-Jones Lexicon is even less helpful.

Classical Greek words have five basic accent classes: oxytones have acute accent on the ultima (final syllable), paroxytones on the penult (next-to-last), proparoxytones on the antepenult (third-to-last); perispomena have circumflex accent on the ultima, properispomena on the penult. Thus the oxytone is actually not the only class with accent on the ultima. The acute accent on the ultima of an oxytone routinely becomes grave when another word follows, but it remains an oxytone. These accents probably had more to do with pitch than loudness when they first appeared in Hellenistic times, though in modern Greek they are stress accents, and have generally resolved down to a single kind, termed οξεία.

The application of this terminology to Japanese is presumably merely a matter of rough equivalency, like calling the English subjective, objective, and possessive cases "nominative," "accusative," and "genitive" respectively, or applying the term "gender" to the Algonquian grammatical distinction between animate and inanimate nouns.

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