unst 

A word used as an onomatopoeia, often having a sexual connotation. It can also be used for a sound of techno, or as a catch phrase.

It is often substituted with oonst, which means the same thing.

"Man, he went all unst unst unst on her last night."

"Did you hear that music? It was all unst unst unst."

unst by A.R.M. aka Zandra October 20, 2008

Unst 

A way of 'party-boying'.
Commonly used over the internet.

Bob: UNST! UNST! UNST!
Jim: He is party-boying all over the place!

Unst by KJDGA April 30, 2008

Unst 

The German word that means everything. It can be used as a filler when you don’t know the word for something.

Unst team

Unst by Sandysalmon May 9, 2023

Unst 

Something Nicole Cherch likes to do.
Can be also referred to as "Runst, Sunst, Eunst, Punst, etc."

I unsted this girl the other night.

Unst by JMoooo January 27, 2011

unst 

A shitty street, often with gaping potholes and weird guys

"cracked an axle in the unst"

unst by speedyclaxton December 27, 2023

Unstable Character Design 

When a specific character from an animated series or TV show can have obvious but not permanent changes to their look such as: hair style or color, clothing, glasses or other accessories.

Princess Bubblegum from Adventure Time has an Unstable character design.

Unstable Character Design by Maxamagican June 6, 2020

emotionally unstable

Intense mood swing;
A minor event may trigger an extreme emotional outburst.

Emotionally unstable; Jake didn't invite me to the party... He hates me and so does everyone else.

emotionally unstable by café February 17, 2015