(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.

To die.

(US and Canada, idiomatic) To prepare or fortify oneself for an activity requiring exertion.

(idiomatic) Used in a result clause to express disbelief in a proposition expressed in a conditional clause.

A typical bad day.

to discontinue something to put a stop to continued losses after facing that it is unlikely it will ever bear fruit