underused 

The opposite of overused.
A word that you had in your daily vocabulary but somehow forgot. It might even got overused but because you haven't used it in a long time it got underused again

Guy1: There's a wet t-shirt contest in the hotel.
Guy2: Epic!
Guy1: They're still looking for 3 judges btw.
Guy3: We gotta register as judges.
Guy1: Already done guys, and guess what we were already picked
Guy2&3: Legendary!
Guy1: Guys that's not legendary, that's fucking ZEDERN!
Guy2: God totally forgot zedern, totally underused :P

underused by Max_Power_0815 December 23, 2011

underside 

same thing as taint, gooch, etc.

it's the patch of skin between the balls and asshole. girls have one as well but it's not as funny.

it was so hot out my underwear was soaking up all the sweat from my underside.

underside by Feve July 25, 2011

Undersee 

It is when you profoundly understand something.

To undersee something is to get out of that fugue state-of-mind and simply see something for what it is instead of, the inferior, understanding what's going on.

Dude 1: "... And that's how it all happened."
Dude 2: "Dude... DUDE!"
Dude 1: "Yeah?"
Dude 2: "Not only do I understand... I UNDERSEE IT!"
Dude 1: "Dude, that's wicked. Lets smoke a J."

Undersee by Smooth Dog January 22, 2012

Underfed 

When an organism isn't given enough derf to sustain itself; past tense

John: I forgot to feed to my dog and it was taken away because it was "underfed", what does that mean?
Sal: You didn't give it enough derf idiot, take better care of your pets.

Underfed by Capitaliism February 5, 2021

Underduded 

When a chick steadily dates a dude that is not as attractive as she is.

Dude, what is Lisa doing with that dork? She is so underduded.

Underduded by 51Westside June 23, 2011

Undersexed 

An adult who has not had enough sex, commensurate with his/her age.
Undersexed individuals find themselves in a vicious circle. Because they lack the sexual experience, they are not confident about sex and hence they rarely get any.

Many serial killers were undersexed. Harvard students are undersexed. Hence, Harvard students are serial killers

Undersexed by Pepe April 8, 2004

Underaged boy 

Did u really just search underaged boys you better get off the internet the cops are on the way u sick pedo fuck

Jared: U want to pick up some underaged boys

John:no I’m calling the cops

Underaged boy by U are sick September 26, 2019