once
🇺🇸
/wʌns/
🇬🇧
/wʌns/
one time only
I visited Paris once and loved it.
at a time in the past
She once lived in London before moving here.
ever or at all (in negative sentences)
He never once called me after that day.
as soon as something happens
Once you start, it gets easier.
as soon as
Once you understand the rules, the game is fun.