inadequack 

When a duck is unable to quack to the minimum acceptable standard

"Whoa Jimmy, what's that sound?"
"It's that mallard again. He must feel so inadequack"

inadequack by Badlydrawnducker November 17, 2016

Inadequick 

A more descriptive form of inadequate that describes someone who's primary inadequacy deals with premature ejaculation.

Girl1 "why did you dump him?"
Girl2 "he was too inadequick for me"

Inadequick by TheDotEater November 18, 2009

inadequate 

not good enough or un-sufficient

mother: go away i dont need any help!
Child: (sob) thanx now i feel completly inadequate

inadequate by frickena October 13, 2006

Textually Inadequate

A person who feels inferior beacuse they recive less text message action than their friends or work colleagues.

Bloody hell does your phone ever stop, your making me feel Textually Inadequate.

Textually Inadequate by Horizontalchampion July 22, 2009

inadequacy 

Lack of the quantity or quality required.

"the inadequacy of available resources"

inadequacy by parroottt April 7, 2016

inadequate 

not good enough, shits bad, looking all bad, NOT on point.

This bitch right next to me wearing all gold jewelry, making me feel hella inadequate with my fake ass jewelry from Claires.

inadequate by ayefaye June 1, 2013

inadequately sexed

when you are not satisfied by your sexual encounters, usually because:
A. your partner sucks
or
B. you take your fantasies way too far and reality just isn't good enough for you anymore :'(

Help! I've been inadequately sexed!

inadequately sexed by kickflip dude July 16, 2011