Sinestro 

Sinestro is a red head villain from the green lantern comics and series, he serves as the main villain.

Fear is the enemy of will. Will is what makes you take action; fear is what stops you, and makes you weak... makes your constructs feeble. - Sinestro ( in the live action Green Lantern movie )

Sinestro by crasher 1998 April 8, 2021

sinestro 

A fat male who usually lives in Birmingham or sometimes bradford. If you spoke to a Sinestro he would usually shout something randomly like "This Is Birmingham"

Normal person: Hello, my name is John
Sinestro: Alroit, moi naim is John

sinestro by TomMosley June 2, 2017

Right Handed Sinestro 

When having sex with somebody from behind, the receiving partner reaches back with their right arm and forcibly attempts to jam their fist up the ass of the giving partner. Named after Thaal Sinestro, the arch nemesis of the Green Lantern, the name is a reference to the fact Sinestro wears his power ring on his left hand so his right hand is free to penetrate people anally, as most supervillains often do with their free hands.

guy 1: I was having sex with this girl last night and I stuck it in her ass without telling her first.

guy 2: hahahaa what did she do?

guy 1: she wasn't happy so she gave me a right handed sinestro to get even.

guy 2: Oh man that sucks!

guy 1: ...I kind of liked it (._.)

Right Handed Sinestro by balooboo May 7, 2011

Sinistrous Mistress 

A sexy, left-handed woman. Also known as a sinister sister.

She's left-handed and a little bit sinister. She's a sinistrous mistress.

Sinistrous Mistress by yo-yo-ma-ma March 22, 2011

sinistrophobia 

is the fear of all things to the Left.

a-"quick! look at that ball on your left!"
b-"i cant, i have sinistrophobia!"

sinistrophobia by iheartmarie May 29, 2010

sinistro

'Sinistro' is a carioca's slang that could means st. cool or st. really bad. It depends on the emphasis.

ex.: Man, the party last night was 'sinistro'. (cool)

ex.: So, it seems the accident was 'sinistro'. (terrible)

sinistro by Antonio Proenca March 18, 2007

Sinestra

a person who is at once beautiful and fearsome. Often used to describe Dominatrixes, particularly Drag-Queen dominatrixes

oh my good, she's beautiful, but scary, she's the full Sinestra

Sinestra by Sinestra October 16, 2015