one swallow doesn’t make a summer
idiomPart ofsummer
one swallow doesn’t make a summer — idiom
1. A single sign or event is not enough to prove that something is definitely going
1.idiom
Definition
A single sign or event is not enough to prove that something is definitely going to happen.
Example
Mia got one good grade, but one swallow doesn’t make a summer.
Don't assume the project will succeed after one positive review; one swallow doesn’t make a summer.