(idiomatic) To puzzle, ponder, or wonder about something.

(idiomatic) To express one's preferences through one's actions, by voluntarily participating in or withdrawing from an activity, group, or process; especially, by physical migration to leave a situation one does not like, or to move to a situation one regards as more beneficial.

(idiomatic) Thinking clearly, sensibly, and reasonably.

(UK) At the limit of one’s patience; frustrated or annoyed.

(idiomatic, figuratively) The state of being overly or extremely impressed with something; enchanted with romance

(idiomatic) To remain calm, reasonable, level-headed, especially in a situation likely to cause distress.

(idiomatic, US, dated) Beyond one's power or ability.

(idiomatic) To grow in confidence in a new situation as one gains experience.

(malapropism) Barmy; crazy; insane.

(idiomatic) Intensely, vigorously, with as much effort as one can supply.