Generally, a person who corrects others' speech or writing for the purpose of feeling superior. However, rare exceptions exist, wherein the term is applied to those who have become tired of the constant abuse of language, are not aware that their behavior warrants application of the term and are genuinely trying to help their peers, or have been editing their friends' essays for eight hours and cannot bear another misplaced preposition.
Friend 1: "Hey, that's the TV remote! Where was it at?"
GN ( malicious type) : "'At''s a preposition, don't end a sentence that way."
Former Friend 1: "Your intolerable, you malicious grammar nazi!"

Foreign Friend 2: "I will see you next next week!"
GN (genuine or unaware type): "I will see you the week after next too!"
by Webster'sSecondCousin March 28, 2015
A grammar nazi is someone who does not have a life and only corrects your grammar. For example Jan havi.
Jan havi is such a grammar nazi!
by xX__Derp__Xx February 07, 2015
N. A person who hates false grammar.

adj. The act of repeatedly correcting another person's grammar.
Hippie: 'Dude, that party was the funnest'
Grammar Nazi: 'You mean: Dude, that party was the most fun.'
by The Friendly Nazi June 02, 2014
Usually a pompous arrogent person who uses a screen name such as "sumfacts" or the like, and resorts to grammar correcting when losing a debate in an online forum.
Why are you always correcting everyones post are you the "grammar nazi"?
by TwoSpirit August 20, 2007
Peoples who dislikes this definitions.
Grammar Nazi: My head exploded after seeing this definition! I must correct all of his grammar mistakes or else I will die.
by tinycrate September 26, 2015
A native english-speaking person with an urge to correct every misspelled word, because they have a micropenis.
"Hello, how long is youre penis?"
"your*, I'm such a Grammar Nazi! ... 7 millimeters."
by Urban talker February 28, 2015
The only NORMAL person on the internet
Some random douche:James is being a grammar nazi!
Jame:How about you graduate 2nd Grade and we'll talk
by Grammar Nazi November 05, 2015

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