Someone who is rude, disrespectful, or insane. As used in the TV show Sam & Cat.
Why is Jacob so lumpatious?
by February 17, 2021
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1. As an adjective, A word to describe a mean or annoying being.
2. As an insult, A word to annoy another person.
3. As an adjective, a word that describes a person who thinks he knows everything.

Official Meaning
Meaning 1: (Man) That boy is really lumpatious (Man 2) I know right.
Meaning 2: (Boy) Ha ha Ha ha, you are so lumpatious! (Person getting insulted) Stop annoying me!
Meaning 3: (Person) I know everything, fact! (Boy) Stop being lumpatious.
by TheElementOfSuprise August 29, 2019
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A meaning of mean, rude or insulting, which causes person two to act revenge.
Person 1: Don't be lumpatious
Person 2: Vengeance is mine!
by Redstone91210 December 3, 2020
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Somebody who is rude and loves to hurt peoples feelings. Most people hate lumpatious people. People who are lumpatious are usually full of themselves and think that they are above everyone else.
Girl : I really hate that guy!!
Boy : Yeah everyone does... he is so lumpatious!!!
by lumpatiouspeoples January 13, 2014
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1.Someone who is rude or disrespectful
2.Someone who is bad
Everyone in my class was being lumpatious so we all got in trouble
by pksparkxxx May 25, 2014
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Lumpatoius means annoying, mean, or rude.
"Why you got to be so Lumpatious?"
by Sky1223 May 9, 2014
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To be annoying, stupid, etc. Lumpatious is usually used as an insult to someone who thinks they are the best thing since sliced bread.
(Random Guy) "Duuuude I'm soooo awesome!"
(Other Guy) "STOP BEING SO LUMPATIOUS!!!!"
by IncrediblyAwesomePerson January 13, 2014
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