weiß, was er tut

knows what he’s doing

→ wissen
phrase Rare #32,122
knows what he’s doing Used to say that a male person is competent, confident, or acting deliberately. The pronouns and verb forms can change depending on who is being referred to.
GE: Er weiß, was er tut.
EN: He knows what he’s doing.

Shichiroji weiß, was er tut.

Shichiroji knows what he's doing.

— Die sieben Samurai (1954)

Sind Sie sicher, dass Tom weiß, was er tut?

Are you sure Tom knows what he’s doing?

Papa weiß, was er tut.

Dad knows what he's doing.

Er weiß, was er tut.

He knows what he's doing.

Bing Bong weiß, was er tut.

Bing Bong knows what he's doing.

— Alles steht Kopf (2015)

Der weiß, was er tut.

He knows what he’s doing.

— Das Boot (1981)

Seid ihr sicher, dass Tom weiß, was er tut?

Are you sure Tom knows what he’s doing?