once: signification et définitions

One time only: once a day.

At one time in the past; formerly.

At any time; ever: Once known, his face is never forgotten.

By one degree of relationship: my first cousin once removed.

A single occurrence; one time: Once will have to do. You can go just this once.

As soon as; if ever; when: Once he goes, we can clean up.

Having been formerly; former: the once capital of the nation.

at once All at one time; simultaneously: Everything happened at once. The view of the skyline is at once awesome, grand, and disappointing.

at once Immediately; instantly: Leave the room at once.