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 12, 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!"
by IncrediblyAwesomePerson January 13, 2014
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From the tv show Sam and Cat, lumpatious is used as an insult. Since Cat uses it, it is not a bad insult. It means to me to be a lumpy potato-like thing.
New Jeresy, don't be Lumpatious!
by Lumpatious_Is_A_Word_ February 08, 2015
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