not for nothing

For a specific or worthy reason. You see? Accidents can happen all too easily. It's not for nothing that we tell you to wear a seatbelt!

not for ˈnothing do I, will they, etc. ...

used to emphasize that there is a good reason for something: Not for nothing did people call him the king of rock and roll.

See also: for, not, nothing, will

Farlex Partner Idioms Dictionary © Farlex 2017

See also:

by no means
not by any means
not for a second
not for a minute
not for a moment
aint
ain't
not for a instant
not for a/one minute/moment/second/instant
not a whit

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