Used other than figuratively or idiomatically: see fuck, you. / (idiomatic, offensive, markedly vulgar) Expression to show discontent with the other party, or to show contempt.

(vulgar) An insulting and humiliating action against somebody.

(idiomatic, colloquial) Used to express the speaker's skepticism about a preceding statement concerning some desired or assumed state of affairs.

(idiomatic, dialect, slang) Indicates agreement, approval, encouragement.

An expression of gratitude. / (as a modifier before a noun) That expresses thanks.

(idiomatic) Expresses support, agreement, certainty or emphasis. / (idiomatic, informal) Certainly, you're welcome; a reply to thank you or to a request.

A polite way of saying no in response to an offer.

Used other than figuratively or idiomatically: see you, know. / (informal) Expression signifying a pause or hesitation.

(grammar) The unstated subject of a command sentence, where it is assumed the subject is the person to whom the command is directed.

(colloquial) OK, okey-dokey, acknowledgment that a request has been heard and understood.