I was looking at the conjugation of connaître, and I noticed that there is a circumflex accent in the third person singular, and only in the third person singular. Why is this? The 1st, 2nd, and 3rd-person singulars are all pronounced the same, so why would there be an accent in the 3rd sg.?

1 Answer 1


Short explanation: Naître used to be spelled naistre, and the third-person singular, naist. But the forms spelled nais retain an "s" in the spelling, so they don't get a circumflex.

Longer explanation: A circumflex on a vowel letter often, although not always, marks a (historically) long vowel that developed from the loss of a following "s" in an earlier form of the word. (The circumflex is also used in the spellings of some words that developed long vowels for other etymological reasons, e.g. chaîne from Latin catena, although this word does seem to have had a spelling chaisne used in the past—another old spelling like that that may be familar to English-speakers is demesne.) Wikipedia gives some more explanation and examples.

Anyway, for this reason, the circumflex doesn't often appear on a vowel before the letter "s" or "z" (although there seem to be some cases, such as châsse). It also doesn't often occur on word-final vowels, as in native words the normal spelling pattern would just use final silent s—e.g. bas is pronounced as if it were spelled *bâ—but I know there are exceptions to this, like the vocative particle "ô".

A similar pattern shows up in the conjugation of the (literary form) imperfect subjunctive: the endings for -er verbs are -asse, -asses, -ât, -assions, -assiez, -assent. Verbs of other conjugations use other vowels, but maintain the same pattern of ss in most forms vs. a circumflex in the third-person singular.

  • Thanks, sumelic. The loss of an s after an a does a lot to explain the isolated occurrence. I realize there are exceptions, but it seems to explain a lot of cases.
    – ktm5124
    Commented Oct 1, 2017 at 7:22

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