Sinasta 

An attention whore. Definitely needs to be murdered in public, and his corpse (cut in 1654851486 pieces) sent to feed the pigs (yay Snatch action !). Worst Mugen creator ever.

Shut up, Sinasta. Just shut up. You have no right to talk.

Sinasta by Orochi KOF97 October 22, 2003

sinsta 

secret instagram where people post scandalous pictures they wouldnt put on their normal instagram

bro, hailey posted a pic of her naked on her sinsta

sinsta by Og John September 30, 2015

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

sinaskafitch 

-n1- A clumsy, loud individual, who tends to unintentionally break things while still being sober.

-n2- An act of breaking something out of pure clumsiness.

-v- To break something out of pure clumsiness.

-n1- Sinaskafitch, don't break anything!

-n2- Way to go, Alex! You pulled a sinaskafitch!

-v- Uhh, Tyler, I just sinaskafitched your lamp.

sinaskafitch by Redsoxpsyco March 1, 2009

Sinatasm 

The act of purposefully putting oneself into an ecstasy state by listening to or chanting certain sounds, especially with the use of music, chanting, poetry, and even prayers.

She is using sinatasm by listening to Elvis Presley!

Sinatasm by Joseph D. Smith July 22, 2008

sinstagram 

A secondary instagram account, typically used for posting memes and/or drunk photos from last night

"Did you see what she posted on her sinstagram? That party looked lit."

sinstagram by lovely labia May 21, 2016

Sinastare 

To maintain eye contact and friendly banter with an acquaintance whilst mentally performing outrages sexual acts.

While the conversation was friendly enough, when she mentioned her daughter’s netball team, he returned a smile and a Sinastare that sent a shiver down her spine. “I think I’m going to go,” she said. Zed smiled again and said nothing.

Sinastare by chmartinez August 6, 2011