undergo

Pass through

"The chemical undergoes a sudden change"; "The fluid undergoes shear"; "undergo a strange sensation"

undergo by k1(keivan) February 28, 2009

Undercover Thug 

-Its a person that is bad or do bad things but to parents or any one that dont know the person is good or thinks is good
- Someone that most know a thug but others that dont believe it or dont know it
- Someone that looks innocent but does bad things

Undercover Thug- A wolf with sheep clothing
Undercover Thug- My son or daughter not a bad person but....
Undercover Thug- Opposite of a undercover cop
Undercover Thug- Someone that do bad things or live thug life but almost never get caught doing them.
(This could mean the same for undercover gangsta, or gangster to)
Undercover Thug- Unusual Suspect

Undercover Thug by tnst December 19, 2014

Underoos 

A nickname or name for undergarments that are tight, similar to that of spandex. Also used as a nickname from Tony Stark to Peter Parker in Captain America Civil War.

Tony Stark: "Alright, I've run out of patience, UNDEROOS!" Peter Parker (Spider-Man) flips in.

Underoos by Peterparkerfanfic October 1, 2017

undergrad 

a university student who has not yet received a first degree

Chris hasn't gotten a degree yet at HVCC, he's called an undergrad

undergrad by Blargg October 17, 2008

Underboss 

Member of a mafia family, typically directly underneath the Don. Handles the mundane details of running a crime family.

The underboss put the capo in charge of making sure the hit was carried out.

Underboss by Roberto Manchez December 29, 2004

Underground Aussie Hip Hop

A non-commercialised non-profit Rap scene. A style of Australian rap music where rappers choose not to 'sell out' to Record Conpanies & instead produce their own Recordings whilst maintaining other forms of financial income.

Guy a) bro, u know any good Underground Aussie Hip Hop beats?

Guy b) yeah sus out #undergroundaussiehiphop on Instagram! Google Celebrity Pete Laan is a fan of that shit

Underground Aussie Hip Hop by Scriptures April 23, 2017

undercookie 

a cookie that has not been sufficiently baked.

seth: You should take the cookies out.

hannah: No way, man! They are liquid on top! Them bitches be undercookies!

undercookie by squallshaper March 14, 2008