I'm aware of what a palindrome is. What do you call words that, when reversed, form other words, such as ton (not) and part (trap)?

  • 9
    I hereby nominate backwords as a neologism to cover this term.
    – Robusto
    Jul 11, 2011 at 0:24
  • 11
    I nominate drowkcab.
    – Jay Elston
    Jul 11, 2011 at 1:14
  • @Jay Elston Hello Might and Magic player.
    – Alan
    Jul 11, 2011 at 6:45

5 Answers 5


Semordnilap is a common name for them, which has been pretty well accepted.

I know that Carroll used them in his work, but I think the term (read it backwards) was invented later.

  • Hey, Guys, try Googling "Semordnilap", rather than just down-vote correct answers. Jul 11, 2011 at 12:57
  • On the face of it, semordnilap fails since the reverse of palindromes should be the same words. And it does not even look like a word, compared say to esrever.
    – Henry
    Oct 4 at 14:55

Wikipedia's Palindrome article gives semordnilap, as Mark Wallace's answer correctly pointed out. It also lists several alternatives:

volvograms, heteropalindromes, semi-palindromes, half-palindromes, reversgrams, mynoretehs, reversible anagrams, word reversals, or anadromes.

Such pairs could also reasonably be called mutual palindromes, by analogy with mutual recursion and mutual quine


It is a type of anagram:

An anagram is a type of word play, the result of rearranging the letters of a word or phrase to produce a new word or phrase, using all the original letters exactly once; e.g., orchestra = carthorse,

Any word or phrase that exactly reproduces the letters in another order is an anagram.

Nota Bene: The emphasis is mine.

  • 1
    How can you be sure? I mean it seems so, but what gives you certainty? Anyway, here is a reference english-for-students.com/Palindromes-1.html, though would like to have better
    – Unreason
    Jul 11, 2011 at 0:43
  • @Unreason I like that link however the technical description of an Anagram seems to be the closest/ right fit. So for now I'll have to go with that. Thanks all the same
    – Dark Star1
    Jul 11, 2011 at 1:55
  • while it seems that these would BE anagrams, I think the OP is looking for something more specific than that. Particularly that the word/phrase that makes another words just when reversed. Anagrams have additional context. Stop -> Pots fills the OPs requirements and those of an anagram, but "anagram" being reaarranged to "nag a ram" is an anagram, but doesn't fill the OPs requirements
    – PsychoData
    Apr 3, 2017 at 6:26

It is an Anadrome.

An anadrome is a word that has its spelling derived by reversing the spelling of another word. It is therefore a special type of anagram. There is a long history of names being coined as ananyms of existing words or names for entities related to the thing named by this subset of anadromes.


  • This was already given in a different answer. Oct 4 at 14:38
  • A search for the word anadrome from dictionary.com doesn't produce an output. However the word Anadromous does turn up as a nearby word which I assumed would, in definition, yield an explanation tending towards the transformative but doesn't.
    – Dark Star1
    Oct 9 at 7:04

The word levidrome was created by a six-year-old Canadian boy, called Levi Budd, who realized that there wasn't a term for a word which when read backwards spelled a different word. For example, spits and tips, stop and pots, stressed and desserts

The word levidrome is a blend of the boy's first name and palindrome, a word or phrase that runs the same backwards and forwards, such as “race car”.

William Shatner sent a tweet to the editors of Oxford Dictionaries extolling the virtues of this newly coined word. At 9:39 AM - 8 Nov 2017 the editors replied:

Thank you very much for your email to Oxford Dictionaries. We are always grateful to receive contributions and feedback, but because of the quantity of correspondence, we are not in general able to reply personally to specific content comments or language queries. All submissions are passed on to our editorial team, who will take your comments into consideration when updating the dictionary data.
Kind regards, The Oxford Dictionaries team

An editor at Oxford Dictionaries made a YouTube video dedicated to Levi, which was posted on their blog November 24, 2017

So, the neologism has not yet entered the Oxford English Dictionary but its editors are keeping a close watch. In the meantime, levidrome has its own hashtag on twitter.

Thanks to social media and because Levi Budd is still a child the term levidrome stands a reasonable chance of sticking than the unpronounceable, and virtually meaningless, semordnilap. We may remember how to write it (it's palindrome backwards) but it's highly unlikely that we would ever say it in everyday life.

Levidrome slides into everyday lexicon Mar. 31, 2018

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