(intransitive) To devote oneself unselfishly to a task, especially to give time and energy.

(idiomatic) In advance of concurrent commonly accepted ideas; showing characteristics of changes yet to be; present in one's work before later advances in the field.

(intransitive) to act pretentiously, or in a snobbish manner; to swagger

(idiomatic) To remain in one's mind for a long duration.

(idiomatic) To apply oneself; to exert a directed effort.

(idiomatic) To withdraw temporarily while recovering from a defeat; to recuperate.

(idiomatic) Used to indicate that a list continues in a similar manner.

(idiomatic) To remain calm, composed, focused, or aware.

In a situation which is entirely suitable, familiar, or enjoyable.

(idiomatic) To begin or launch; to get going.