synista 

The way a dumb emo with a bad haircut spells sinister.

He needed to save ink to put around his eyes cause his mum confiscated his mascara, so he spelt sinister with two less letters. WTF is a synista?

synista by Seals October 17, 2006

Sinistar 

A mid-1980s arcade game where you pilot a ship through an asteroid field mining for bombs to use against a super-demonic space robot called Sinistar, which is being built by swarming drones and defended by fast-firing tanks. Once Sinistar's construction is completed, he starts threatening and taunting you ("Run, Coward!") and makes a beeline to your sorry hide. The stress level involved gets ridiculously high. It is/was quite possibly the toughest arcade game in human history.

Beware, I live.
I hunger.
AAAAAAAURRRRRRRRGGHHHAAAAAAA!!!

Sinistar by Paul Wartenberg December 10, 2003

synostalgia 

A feeling of longing for a time or place that has not been directly experienced, particularly a time before one's birth.

Meredith wears bell bottoms purely out of synostalgia. She was born in 1983.

synostalgia by SrBurrito August 20, 2010

Snista

A sister, but not. Girlfriends that have known each other since birth, but are not biologically related.

"I can't wait to partake in some tomfoolery with my Snistas!"

"I'm just watching the Labyrinth with my Snistas."

Snista by Beatrice Rice May 13, 2011

Sinista 

When someone you know who's close to you is planning bad intentions for you or your crew while acting like everything's still Legit.

She invited him to her party, even though she knew her ex-boyfriend and his creeps were gonna show up. That's some sinista shit she played out.

Sinista by MeO'MyOh! February 26, 2021

synita 

She’s a sexy minx. that’s all you need to know.

Synita is so fine I want her so bad.

synita by Synita November 22, 2021

Synister Weasel 

A Synister Weasel is promiscuous female, one who may deceptively act innocent whilst cheating on her man.

"Yo, just brapped out some guy in Gedzville tossing ma' girls salad!"

"man, that gash is a synister weasel, bre!"

Synister Weasel by MC Scratch January 1, 2009