Meaning of the word once in English

What does once mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

once

US /wʌns/
UK /wʌns/
"once" picture

Adverb

1.

on one occasion or for one time only

Example:
•
I only met him once.
•
You only live once.
2.

in the past; formerly

Example:
•
He was once a famous actor.
•
Once upon a time, there was a princess.

Conjunction

as soon as; when

Example:
•
Once you finish your homework, you can play.
•
Once he arrived, the meeting began.