There are two terms used for pairs of words (in the same or different languages) that look similar but are actually unrelated: false friend and false cognate. Are these terms synonymous? If not, what's the difference?

2 Answers 2


They are distinct.


  • False cognates are words that are similar in their modern forms despite having different etymologies. This is regardless of whether the modern meanings are similar.
  • False friends are words that are similar in their modern forms despite having different modern meanings. This is regardless of whether the words are etymologically connected.


True cognates, true friends

Words with a common etymology and modern form and meaning. These are extremely numerous, of course.

True cognates, false friends

Words with a common etymology but which have shifted to have different meanings.

False cognates, true friends

Words etymologically unrelated that nevertheless now have similar meanings (typically by coincidence, but sometimes by influence/reinforcement).

False cognates, false friends

These are completely unrelated words that happen to look similar:


  • Reinforcement and language contact. In the case of false cognates/true friends, if the two languages are in contact, or it occurs within a single language), the similar meanings tend to reinforce each other. They will possibly even be re-analyzed as forms of the same word, thereby merging the lexemes.
  • False recent cognates that are true cognates more distantly. Example: Malay nama 'name' might look like a loanword from English name (Malaya was a British colony), but it is actually an older loanword from Sanskrit (cognate to the English via Proto-Indo-European).
  • Re-analysis: false-cognate words may have their spelling altered to match the form of a true friend in the other language. English examples: indict, victuals, from French but with elided Latin consonants re-added. Spelling and pronunciation are borrowed via different paths, so the spelling could be considered cognate though the pronunciation is not. (In this case, both are more distantly cognate via Latin; the French words were sound-changed.)
  • Calques or loan-translations: the form of the word is cognate, but its components are often not. Example: Latin insecta, Ancient Greek ἔντομον 'insect', from different roots meaning 'cut'
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    A model answer! More like this one please! (-: Sep 25, 2012 at 4:54

Most often, the expression “false cognate” is used as a synonym for “false friend”. If you google with them, you will mostly find pages that use them synonymously.

However, other meanings have also been proposed. In Concise Encyclopedia of Semantics edited by Keith Allan, the article “False friends”, p. 308–309, describes false cognates as a special case of false friends, namely false friends that are not etymologically related. And in a Unilang discussion, it was suggested (without references) that “false cognates are words that look the same and have the same meaning but have different roots”, so that false cognates would not be false friends at all.

Thus, the expression “false cognate” is best avoided, since it has different meanings to different people. When you encounter it, assume that it probably means “false friend”, but with some suspicion: it might mean something rather different.

  • That's a very annoying conceptual error of foreign language teachers here in Brazil. Feb 7, 2016 at 17:06

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