I'm assuming it means something like "well look who it is". Can anyone explain to me the grammatical function of "t'y" here?

  • Pas très beau, cette expression. Il vaux mieux ne pas l'utiliser.
    – Frank
    Mar 7, 2017 at 3:24

2 Answers 2


The meaning is simply "Who is it ?" (Qui c'est ? formally: Qui est-ce ?) and y is here a short for il (he):

Qui c'est-t-il ?

This is an outdated, colloquial way of asking nowadays only used for humorous effects but possibly also a regionalism.


Qui est-ce? Parisian slang (old )

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