unspecified number / what number

(interrogative) What amount or quantity (of something stated or implied). / (specifically, when referring to the cost of an item) What amount of money.

(interrogative) To what degree; to what extent.

(UK, slang, obsolete) you what? huh?

Synonym of what about

The knowledge and skill to be able to (do something correctly).

(idiomatic, informal) Why; why is it; for what reason or purpose; due to what cause?

Used literally: for what duration.

Used literally: what length. / Used literally: what duration.

(Australia, colloquial) An expression of embarrassment, either for the speaker or for another individual or group.