Top definition
Sister-In-Law

Wifes sister, brothers sister.

also see SILF - Sister In Law I'd Fuck
"Man, Your SIL is Smokin hot"
by EVP January 22, 2008
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2
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!"
by Grymm Deth September 30, 2009
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3
a shortened version of silly
gosh nyomi! you're such a sil!
by Caitlin C October 27, 2005
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4
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.
by lil em March 10, 2008
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5
Seizure in laughter, similar to lol.
"Why did the girl fall off the swing?"
"I don't know; why?"
"Because she had no arms, duh!"
"OH, SIL! SIL SIL SIL!"
by srrh August 07, 2004
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6
One who is silly, or could be described as such.
Man, that Katie Knutson girl is a major sil! She liked the movie About a Boy and thinks Conan is funny!
by LP_hoss July 10, 2008
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7
Should I Leave
by Zaddie March 01, 2014
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