Top Definition
NMA
Negative mental attitude.

Opposite of pma or positive mental attitude.
Quit it with the NMA. You're such a pessimist.
by himynameistj January 07, 2011
nma
"Not My Art". Mostly used in the tags section on Tumblr to appreciate someone else's artwork without having other bloggers think you stole it. It's mostly a precaution.
*Drawing of a cat*
#AWW LOOK AT THIS #cats #kittens #nma
by flavortown August 09, 2016
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