An idiot or a self centred ego growing a-s hole
E.g: Donald Trump
by Willydillydaphadilly January 22, 2017
The term used as a replacement for more vulgar words such as fuck,shit,bitch,and more.

Pronounced lum.pay.shus
You're so lumpatious
by Budderminer2014 April 14, 2014
An informal term used in an episode of Sam&cat used to describe a stupid person
Hey u idiot your so lumpatious in this school go f*** yourself noob
by Epictailz January 24, 2017
Lumpatious a word from the tv show SAM AND CAT.
Often used as an insult
STOP BEING SO LUMPATIOUS!
by HELLPOP March 18, 2022
slow mind and doesn’t comprehend fast enough (aka Cat Valentine) (season 2 episode 4)
by kk 671 November 16, 2019
It means someone Idiotic, mean, or just absolutely fucked up.XD
by Faze Ghidorah April 16, 2019
Someone who’s a bully that no one likes.
Shona- OMG, why does Bruce have to be so fucking lumpatious FFS!

Renee- Yeah, exactly! No wonder why no one likes that lumpatious git.

Retarded donkey- I like him!