(interrogative) what / (relative) which (referring to the entire preceding clause) / (relative) that, which (referring to das, alles, etwas, nichts, and neuter substantival adjectives) / (relative, colloquial) that, which (referring to neuter singular nouns, instead of standard das) / (indefinite, colloquial) something, anything (instead of standard etwas)

(archaic) what; what kind of

(colloquial) a little, somewhat / (interrogative, colloquial) why, what for

what; what kind of / (oh) what; (oh) such

(youth slang) Used to express strong rejection of a particular phrase in a statement by someone else; similar to English what do you mean.

(colloquial, casually) what's up

how much does it cost

(idiomatic) what the heck

what the Devil, what the fuck

come what may