Top Definition
Not safe for school, like NSFW, but not safe for school instead of work.
Guys, check this site out... Careful though, its NSFS
av Anuj Saraswat 2 juni 2005
NSF
NO SUFFICIENT FUNDS

When your chequing account does not have enough money for the chequeholder to cash.
sorry, your cheque came back NSF.
#cheque #aaron chong #nsf #money #funds
av ik999 17 mars 2006
NSF
No Strings Fun, having sex with someone without getting into a relationship with them.
girl: i'm looking for a full-on relationship
guy: fuck that, i want NSF!
#non #relationships #sexy #sexual #dog
av zigzag604 3 oktober 2011
NSF
Non-Sexual Friendly way.
So, if you were saying goodbye to a friend you'd say:
See you tomorrow! Love ya NSF!
#not #related #at #all #see?
av dumbledoc 8 maj 2007
NSF
An ancient word, usually it is found in old cyrillic or aramaic texts acompanied by a simple drawing of a bovine form and/or swords. It is often used to refer to a group of people that are "more 1337 than you", or a series of deviant sexual perversions.
"You suck, we are NSF!"

"So I got some glue, ballpoint pens, and teacups together last night and NSF'ed your mom!"
av assrabbit 14 juli 2004
nsf
national science foundation
NSF funded our grant for $329,500.00
#nsf #national science foundation #research #grant #funds
av seanbmoredudeyeahbuddy 9 januari 2009
NSF
Non-Sufficient Funds
Banker: "Sorry sir, the check you deposited last week has been returned due to Non-Sufficient Funds"

Customer: "Wow, really, that's my paycheck."

Banker: "Yes sir, here's a copy of the check. As you can see, it's stamped 'NSF' from the paying bank."
#nsf #bank #non sufficient funds #broke #fees
av Der Duh Blah 17 maj 2011
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