(idiomatic) Insane, crazy. / (idiomatic) Temporarily mentally unstable; very distressed.

Punctual or according to schedule.

Punctually or according to the schedule. / By installments, payments over a period of time. / (chess) By a player's running out of time.

(idiomatic) To watch and pay attention to, in case of misbehaviour or mishap.

(transitive, idiomatic) To persist or continue. / (intransitive, idiomatic) To persist in talking about a subject to the annoyance of the listener.

(idiomatic) To feel overwhelming sorrow, jealousy, or longing; to grieve.

(idiomatic) To reconsider; rethink; to reach a different conclusion. / (idiomatic) To change one's story.

On one's feet; walking, jogging or running but not in a vehicle or on the back of an animal. / (now rare, chiefly hunting) On the move; astir. / In progress or in preparation; active, in operation.

(sequence, idiomatic) From another point of view.

(UK, Australia, informal) functioning erratically, malfunctioning; not working or not working well. Usually refers to a mechanical or electrical device.