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The very last year of high school. At the end of this school year comes graduation. Most kids are relieved that the hell of homework, drama, friends, and boring shit is over.
YES! I'm finally a high school senior! I've been in the fucking school system for the past 12 years. 12 years of hell! It's over! WOOO graduation!
by xxxcore April 05, 2006
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The highest possible rank in the high school hierarchy. Fourth years are the best of the best - they've survived three years of being mocked by the grades above them and are determined to make the three years below them suffer the same way. They've got power, connections, sometimes weed, and a shitload of exams coming their way, which they'll likely either completely ace or completely fail.
Guy 1, pointing at another guy: Who's that?

Guy 2: That's a senior. I don't remember his name, but we should bow while he walks by or he'll get his connections to murder us.

Guy 1: Oh shit.
by RuRiJoMai January 31, 2017
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Seniors are made to destroy any self confidence that freshman may have gained in their past 8 years of schooling. And they do a fantastic job.
by jesssicannnn7 August 05, 2010
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Last year of high school. Basically there to tear shit up. Last chance to not give a fuck before stepping out into the real world. Last homecomings. Last chance to play sports for some of us. Last chance to show people who you are. The year where you go balls out.
Freshmen girl- "OMG is he a senior?!"
Other freshmen girl-"yes"
Freshmen girl 1-"What a badass"
by marissaandjosh;D July 23, 2012
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seniors in high school, who don't give a shit, count down til graduation day, give up on almost everything, get into the most trouble, dislike every junior, and basically says "fuck it."
The seniors plan their senior skip day for every month.
by hilaryx8 April 03, 2008
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Somebody who has worked their way up to a high level and can be classed as senior. Someone who deserves respect as senior man/woman.

Can also refer to older members of our society.
Anthony; Go and clean up over there please
Timmy; Ok you are more senior than me
by Maverick Corleone January 20, 2007
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By far, probably one of the best year out of all four.
Pretty exciting, everyone wants to be you, full of great
by Jazminfggo January 14, 2009
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