Something commonly found in high school seniors, that ive had since freshman year.
Senior: Dude your a sophomore?
Me: Yeah.
Senior: I had no clue, you have major senioritis.
Me: Man ive had that since i got here
by Por Que!!!!!!!!!!! June 24, 2011
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The inflamation of the Senior. Can result from a bug bite, or some other reaction from an outside source.
Drew, graduating from highschool in less than a month, was soon diagnosed with senioritis when he walked into a patch of poison ivy, leaving his skin puffy and swollen.
by Ben F. Campbell May 19, 2007
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A symptom that seniors in high school usually have. It causes them to not try hard in school, skip class and go to the beach as well as think they are better than all of the underclass men. All they are looking toward to is graduation and to finally be in college.
Senior 1 "Should we go to school today?"
Senior 2 "No, I mean we're seniors so let's just skip and we'll go to the beach"

Senior 1 "That sounds like a better idea, besides we're graduating in 5 months"
Senior 2 "Haha, we have a bad case of senioritis"
by Marina Simmity October 23, 2013
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the disease that hits old people of around the age of 70, symptoms are grey/white/no hair, hunched backs, cronic deafness, walking canes, and most importantly slow driving!!
Person 1 ~ dude why are they driving so slow!!!

Person 2 ~ dude i see grey hair and the radio is up loud!

Person 1 ~ damn they must have senioritis
by Jade is sweet June 10, 2005
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1. When freshmen became obsessed with senior boys and can't seem to cure their obsession with them.

2. When underclassmen look up to seniors...alot.
1. *sighs and stares at senior boy*
"Meghan, we need to cure you of your senioritis."

2. "There's Missy talking to her seniors again."
"Dude, she's got major senioritis."
by Pelican June 8, 2005
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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 6, 2006
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