I've been there once or twice.
once or twice
idiomA small, indefinite number of times.
She mentioned his name once or twice, but I didn't think much of it.
In his long career, the reclusive author had granted interviews only once or twice, preferring to let his novels speak for themselves.
- 01
all at once
Unexpectedly; without warning; all of a sudden.
- 02
for this once
On this particular occasion, to make an exception
- 03
once again
Again, once more, one more time.
- 04
once and for all
Conclusively, finally, permanently.
- 05
once in a blue moon
Very rarely; very infrequently.
- 06
once in a while
Occasionally; sometimes.
- 07
think twice
To reconsider, use judgement; to proceed with caution or thought.
- 08
what happens twice happens thrice
An event that happens two times will happen three times.