sis

Short for sister, commonly used as a term of endearment to friends in urban new york/jersey areas

hey, sis, whats up

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sis

Not meaning “sister”. Commonly used to refer to a close friend or bestfriend.

“what’s up, sis”

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SiS

Suffering in Silence

Im alone now.. SiS.

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sis

1) Short for sister
2) In the song Fuck the Pain Away by Peaches, SIS seems to stand for Stay In School...

My sis went to the movies with a scumball.

"Stay in school... Cause it's the best..."

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sis

Slang for sister

Me and my sis went to the movies.

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SIS

Abbreviation for: "Sisters, In, Spirit". Your Best Friend or Bae. Usually used to refer to someone really close to you, someone you spend a lot of time with, like your sister.

Girl: OMG, squad on fleek!
Girl 2: yas, we look #Fabulous
Girl: Yas Sis Yas!

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SI

Abbr. for 'stupid idiot'

As in Football Factory from 2004:
"Jog on, you si!"

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