Used to congratulate someone on a mediocre achievement.

One single congratulation as though what someone did was cool, but not worth some celebration.
congratulation on learning to spell onomatopoeia.

ooh looks like you got 1 full side on that Rubix Cube... congrat bro.
by Jahcasian April 14, 2011
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Congrats is a term used to sarcastically congratulate someone on an achievement, such as atrocious behavior, a hideous style of clothing, or the amount of likes someone receives on an Instagram or Facebook photo which they probably paid people to like. "Congrats" is another way of telling someone that they are a fuck.
Girl 1: I'm having a party, but you're not invited.
Girl 2: Congrats!

*Girl walks by in high-waisted shorts*
Guy: Congrats on your high-waisted shorts that don't even cover your ass!

*Scrolling through a girl's Instagram or Facebook newsfeed*
Girl 1: Congrats on your 100 likes on your photo!
Girl 2: Congrats on your pounds of makeup!
by chigirl_ January 28, 2014
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the word used when you are trying to congratulate your english teacher for getting teacher of the year. then when you try to write congratulations on her cookie cake, you leave out a couple letters. you tell people congratulations wouldnt fit so you made up a new word in order to save face :
I wrote congrations on Mrs. Aker's cookie cake because congratulations wouldnt fit.
by ahart14 March 10, 2010
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A term coined by Andre knot and Zach Jackson of the A to Z podcast. When some jackass motherfucker says or does something incredibly stupid that they delusionally think is praiseworthy and should be the reason everyone likes and admires them, you could say "congrats for being a big fucking pompous dumbass who lacks the basic human decency to shut the fuck up about yourself and remains oblivious as to how others perceive your clueless arrogance."

Or, you can save yourself the effort and just say "congrat"
Johnny Manziel has been tweeting endlessly about living clean and getting in shape to return to the NFL ...from a autograph booth inside a shopping mall sports memorabilia store. you inspire nothing but confidence Johnny Football. Congrat.
by Bernie Kosar's Hot Sauce February 4, 2017
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For when you want to congratulate someone, but the accomplishment was small enough that they only deserve one congratulation. Most often used in sarcastic situations or to express that you you don't care.
Example 1:

Person A: Hey man, I found a lucky penny!
Person B:Congrat
Person A: Fuck you, man
Example 2: Omegle
Stranger 1: M
Stranger 2: Congrat.
Stranger 1 has disconnected.
by Schwiftyinhere May 29, 2016
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Congratulating a bro, for doing a hoe, or accomplishing something. Commely used between Cub players. Can also be used when someone says a long story for nothing, or when you don't know what to say.
Bro 1: Dude, I had this unreal time with a chick last night, she was so unreal in bed.
Bro 2: Congrats bro.
by congratsbro June 30, 2011
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