Underfucked 

sexually deprived

1. Yo look how hard she's hitting on him... she's definitely underfucked!

2. That guy is completely underfucked. He just desperately asked her out again after she told him to fuck off for the third time...

Underfucked by Stephen and friends June 26, 2010

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

Underhanded 

Cheap (not referring to money); unfair.

His underhanded business deals subjected him to a taxing amount of government scrutiny.

Underhanded by Diggity Monkeez February 15, 2005

underhanded comment 

A snide statement that is hidden behind what seems to be a polite one. It can be an inside joke, but can also have negative connotation.

Chris Brown: “I f--- with Frank Ocean! Reminds me of a young James Fauntleroy or Kevin Cossum”

Frank Ocean: “i f---s wit chris brown, reminds me of a young sisqo or ike turner.”
“i just dont like underhanded comments. thats all im saying.”

underhanded comment by Follow @_PoKhaMani June 23, 2011

Underfucked 

The person who does not have enough sex and is acting frustrated all the time

John: Why Becky is so annoying? what is wrong with her?

Mary: Oh, she is just underfucked.

Underfucked by equillibra August 10, 2017

longest undefended border

The border between Canada and the United States of America.

Canada and the US of A is divided by the longest undefended border. It was last defended in 1812.

longest undefended border by doggoneitall June 9, 2010

underminded

A person with less knowledge who attempts to appear more intelligent by providing a solution that has already been established with the intent to take credit.

Jacob flagged down his supervisor to discuss a problem and solution that he had overheard his coworker Cece describing. He regurgitated the situation which left Cece feeling completely underminded as she knew all the intricacies and Jacob had clearly taken credit for her solution.

underminded by puppy1002 February 25, 2015