(chiefly UK) to be determined not to do something.

To irritate or strike as unpleasant. / To cause a disagreeable tingling sensation in one's teeth, as when acids are brought into contact with them.

Third-person singular simple present indicative form of set one's watch by someone

Third-person singular simple present indicative form of set someone's teeth on edge

(chiefly imperative, idiomatic) To ponder or experience a past time.

(mathematics) An axiomatic system that was proposed in the early 20th century in order to formulate a theory of sets free from paradoxes such as Russell's paradox, and became the standard form of axiomatic set theory.

Third-person singular simple present indicative form of set the cat among the pigeons

Third-person singular simple present indicative form of set one's hair on fire

Alternative form of on your mark, get set, go

(sports) A three-command start when racing: