tu n'y connais rien

you don't know anything about it

→ tu

phrase Rare #45,157

you don't know anything about it A blunt way to say someone knows nothing about a subject. The subject can be specified with « en », as in « en cuisine » (about cooking).

FR: Tu n'y connais rien en cuisine.

EN: You don't know anything about cooking.

Si tu n'y connais rien en ordinateurs, tu es vraiment en retard.

If you don't know anything about computers, you're really behind the times.

Tu n'y connais rien en hommes.

You know nothing about men.

— J'ai rencontré le Diable (2010)

Tu n'y connais rien !

You don't know anything about it!

— Jusqu'au bout du rêve (1989)

Tu n'y connais rien.

You don't know anything about it.

— Le Loup de Wall Street (2013)

Non, tu n'y connais rien.

No, you don't know the first thing about it.

— Les Lundis au soleil (2002)