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1.
something that you say in order to tell someone not to worry..

means "don't worry about it", or sometimes "take it easy".
Don't sweat it! We've got plenty of time to get there before the show starts.
by Aninda Dutta July 28, 2010
71 7
 
2.
don't mind
never mind
so, just "don't sweat it"!
by gotanswer? April 24, 2009
66 21
 
3.
Something you tell someone when they shouldn't worry about something.

Mainly means "don't worry about it"
Nigga 1: Shit, man. I'm forgot we're having a drug test today.

Nigga 2: Don't sweat it, I gotchu. I have some clean piss.

Nigga 1: You my nigga.
by That Nigga You Know June 02, 2013
26 7