Pernispious 

When you get mad at someone for cutting you off in a drive-thru and they mess up your order.

Dan was being pernispious because of someone else's action at the drive-thru.

Pernispious by PernispiousDan April 19, 2017

pernicious

adj. causing great harm, or death, or something else real bad.

DAMN that was a pernicious fart.

pernicious by Emetic August 28, 2003

Penistious 

Derived from the adjective facetious which means "treating serious issues with deliberately inappropriate humor; flippant" penistious is treating any issues in a penis-like manner with deliberately acting like a dick.

That politician was really being penistious during the debate. It is very penistious to say 'it is what it is.'

Penistious by Telgardo March 3, 2020

Pernicious Love 

Having love for somebody that causes harm towards you, knowing full well it’s bad for you. You want to stop, but you always come back.

“I don’t understand how she keeps coming back to that monster!”

“She’s feeling pernicious love.”

Pernicious Love by Luca Simpson January 11, 2019

pernicious

Describes something that really messes you up. Most of the time you can't tell at the beginning but before you know it, it really fucks you up.

Person 1: It ain't worth it bro, you know Prozac is pernicious. Don't take it.

Person 2: Too late, I can't get off of it now.

Person 1: Damn, I hope you don't get erectile dysfunction like that other kid.

Person 2: Too late for that too...

pernicious by Moses D. October 8, 2011

pernicious

Having a harmful effect especially in a stubble or gradual way

The pernicious weed has spread all over the flower bed

pernicious by Banditzzi May 26, 2022

pernicious

adj: an all purpose word for something cool, hip, or awesome; or evil, twisted, and sick. Also functions well as a nickname.

Example of cool: Dude, Lord of the Rings: ROTK was SO pernicious!

Example of evil: Our algebra homework last night was PERNICIOUS! I didn't get any sleep!

pernicious by Niph April 24, 2004