sinisterity 

Skill in performing tasks with the hand, specifically the left hand or relating to a left handed person.
(Left-handed equivalent of dexterity)

“I love your sinisterity with chopsticks, it’s great that you can grab even the roundest cherry tomatoes.”

sinisterity by verbumdirector December 26, 2024

SinisterNY 

Huge Flaming Faggot who likes cold beer bottles shoved up their ass,while having CockHolster crammed full.

"<"B">"Sinister<D> IS A SinisterNY.

SinisterNY by Anonymous July 18, 2003

sinistericious 

The most delicious sin u can indulge upon.. Used in situations of sexcapades and adulterous activities participants that have been lucky enough to enter into sweet sinistericious seduction

Shes the most sinistericious Chanel and delectable whore I ever deviated with..!!!

That whore is sinistericious Chanel I'd eat her all up.
Theres delicious and then there's that dark deviate she's purely sinistericious like a taste of heaven that would comit you to hell but worth it.
As Sinistericious as a snakes venom I bet.
So Sinistericious I'm an addict shes better than sugar and twice as sweet

sinistericious by Chanelsinistericous seductress July 19, 2017

Sinisterisity 

Sinister as a noun.

They laughed at Martha's sinisterisity as she slurped her coke creepily through her straw.

Sinisterisity by jellyfoshnoodle May 4, 2018

sinistery 

Countable noun: An act that is sinister. Countable plural form: Sinisteries

Used because sinisterness is just fugly in the countable sense.

"They got a $4B payout‽" "Yes, that sinistery of <private equity firm> is unmatched in all their history!"

Kryin Bemp ran for governor while serving as secretary of state. They improperly purged voter roles and engaged in other sinisteries, ensuring their win.

sinistery by Unringard November 4, 2022