underthink 

Verb: to think or analyze inadequately
(third-person singular simple present 'underthinks'; present participle 'underthinking'; simple past and past participle 'underthought' – informal 'underthunk' ) \ antonym – 'overthink'

It's a trick question; don't underthink it.

underthink by ΔиłĦ☼иצ ߀₡ʞ November 19, 2010

Underthink 

When a person thinks less than they should have.
Something opposite of overthink

A: I broke up, but whatever atleast madrid is winning the champions league.
B: damn bro I need to underthink this way.

Underthink by Junnhoe December 8, 2023

underthunk

to not totally consider any and or all outcomes of any given situation...basically being a fucking jackass regarding the most minute problems

probably shouldnt have shat on that hookers face,i completely underthunk her slutty needs

urge "im gonna drop a nuke this game baby"
baby" thats so hot baby"
urge "im at 23 kills"
baby "you fucking rule you fat fuck"
urge "fuck me,i dont have a nuke on,i so underthunk how good i was gonna play this game"

underthunk by urge and tish May 28, 2010

undertickle 

The act of smacking a bitch between the ass cheeks and tickling her clit...all in one motion.

Undertickle that ho.

undertickle by BIG OLE BLACK GUY November 9, 2013

underchicked 

The opposite of overchicked.
When a better-than-average-looking guy ends up with a chick that's less attractive than he is. This is often the result of a chick that's willing to put out and guy that is less than confident in himself.

Sally is 5'03, 200lb and spotty. Harry is 6'04, healthy, wealthy and handsome. How Sally managed to snare Harry is a mystery. He definitely underchicked on this hook up.

underchicked by PhanTim October 24, 2008

Underchunk 

1. verb- To puke in another person's butt.
2. noun- The debris created through the act of puking in another person's butt.

1. Hey, you want to underchunk tonight?
2. OHHH!!! You got underchunk all over the bed!

Underchunk by zekedafreke January 20, 2009

Undertaining 

Not entertaining. Boring. Not interesting. mind-numbing, tiresome, And dull.

That guy Brian is sooo undertaining.

Undertaining by BryGasm March 9, 2010