Top Definition
SIL
Sister-In-Law

Wifes sister, brothers sister.

also see SILF - Sister In Law I'd Fuck
"Man, Your SIL is Smokin hot"
#sil #sister in law #in law #sister #relative humidity
by EVP January 22, 2008
SIL
An abbreviation for Strong Independent Lady.

a) Term used to protect a woman from being called a derogatory name.

b) Term used as code for a mean, mean, witchy, shrew of a woman
You: "Man, my boss is such a $%^&!"

Them: "No she is just a Strong and Independent Lady and you just can't handle that."

You: "Yes! thanks for High Roading me there. You're a SIL too!"

Them: "Thanks!"
#mean #jerk #feminist #feminazi #ugly #girl #stupid #woman #annoying #female #twat #dumb #tramp #dog #punk #crazy #retard #strong and independent lady #high roading #waterboarding
by Grymm Deth September 30, 2009
sil
a shortened version of silly
gosh nyomi! you're such a sil!
#funny #weird #odd #silly #queer
by Caitlin C October 27, 2005
Should I Leave
This bitch is annoying SIL?
#should #i #leave #shouldn't #you #stay
by Zaddie March 01, 2014
Shortened version of School of Information and Library Science.
The SILS program at UNC is supposed to be really excellent.
#ils #library science #information science #library school #librarians
by Yo386 September 27, 2010
sil
something that is described as being cute, little, lovable, italian, gorgeous, and so on. Used when describing a person you feel affection towards.
Myles is such a sil! or Love you sil.
#cute #little #sweet #adorable #nice tush
by lil em March 10, 2008
SIL
Shit Intensity Level; From 1 to 10, 1 being a pleasureful dump, 10 being hot-tamale diarrhea.
Guy: Man dude, I had a SIL of 10 just now, shouldn't have had that taco bell last night...

Guy's Friend: Dang dude! That must have hurt!
#shit #intensity #pleasureful #dump #diarrhea #taco bell
by hudzell September 29, 2014
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