(intransitive, idiomatic, (with "for")) To be on the alert, to be watchful.

(idiomatic) To decide; to reach a conclusion.

(idiomatic) retire, call it a day

(idiomatic) To concern oneself only with what is of interest to oneself and not interfere in the affairs of others.

To experience a certain “fluttery” physical sensation in a person's stomach, associated with nervousness, uncertainty, anxiety, or apprehension.

(idiomatic) To promote oneself; to boast or brag; to tout oneself.

(informal) To speak about things rashly or foolishly, when it would be better to stay silent.

(idiomatic) No harm to one.

(idiomatic) To be absolutely sure of something; to be certain enough of something to wager everything.

(idiomatic, informal) To stop wasting time in preliminaries, and concentrate on the important task.