(1) To a linguist, grammar is the structure of a language (as opposed to its lexicon, its words). Contrary to popular opinion, grammar is not something enforced by language academies, but it exists necessarily in all languages.

(2) To a non-linguist, grammar usually refers to various pre-scientific notions of "correct" usage.
Chinese grammar is very different from English.
by dattdso January 1, 2011
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A dead language. Often mocked and misunderstood by morons who learned it in second grade and abandoned it.
Scholar: "The quick brown fox jumps over the lazy dog."
Moron on computer: "omg u spk w/ gramr?!?!?!?!?! i thot no1 uzd it ne more!!!! wat do u uze it 4? y du u evn bothr? cuz leik no1 lieks 2 uz it cuz they r all dum!!@!! omgrotflmaocmailsxljjca2838ac83oacsmiley facecaz,s94u88447#$&@!!!!!!"
by Jason Q. Dedrickston August 19, 2005
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The act of openly correcting someone else's improper use of grammar in front of others, oftentimes at a social gathering.
I said "her and I" instead of "she and I," so she started grammarizing me at the party.
by MCMcP January 25, 2014
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That one thing that don't get used properly or nothing like that. Many peoples do badly at grammaring. Its how sentences are supposed to sound but it isnt usually. Grammar no me. Derp.
Person 1: Hey you. You have absolutely horrible grammar.
Person 2: What you talkin bout boi? I gots tah good grammar. I done gone got me a good edumacation.
by Hawkman92 May 15, 2009
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1: A concept which is implemented in every modern langauge today. Each different group has it's own rules. People on the internet however, don't.

2: The last name of actor Kelsey Grammer that starred in the series Frasier and Cheers. Only the speech is writing is slightly different in a way that you would spell 'Basterds' in a movie title to get more hits.
1: Hay guys, yesterday i watch a movie that was too good ever.
2: Dude, your grammar sucks.
1: Last night that what you're mom said.

2: That doesn't even make sense.
by casdebom April 25, 2010
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Something that isn't even used on the Internet these days. Only a small percentage of people use correct grammar on the Internet, while the rest type like this, "kan u un3rst@hn diz?". Using grammar is very easy, but some people are incapable to do that cause they are stupid.
Charley Mao: h3y wats up?

Me: Um, can you use correct grammar at least?

Me: Wow its amazing how a 20 year old types like a 3rd grader.

Charley Mao: 8(

Me: Well it's true.
by JessicaMartinezLOL August 10, 2010
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Something that should be learnt properly before being allowed access to word definitions on Urban Dictionary. I'm sick of misused punctuation, missing capital letters and lazy spelling. If I had a red pen right now...
"Lyk do u giez no how 2 punktooate coz mie teecher says i suk @ it"
"Get out."
by Smythe August 11, 2005
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