A title given to ALL high school Seniors. It is derived from the words: Senior, Royalty, Majesty, and Superiority. High school Seniors deserve to be treated as if they are in a state of being royal and superior! Seniorities should be treated this way by underclassmen: Juniors, Sophomores, and Freshmen!

Seniority can be used as a noun or an adjective.
Singular: Seniority | Plural: Seniorities
Hey, you're not that bad. Come sit with us, anytime, you've just granted yourself some seniority respect!
by whatitdoscoobydoo September 15, 2010
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a medical issue that occurs when one becomes a senior, this is usually caused by a lot of stress put on a student in the freshman, sophomore, and junior years, this bug causes major laziness and is a cause for many lazy students who just want to get out of there
Bob has senioritis therefore he is lazy.
by ?????????BIGDOG????????? September 11, 2006
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A common virus that infects all teenagers usually in their second semester of the school year that may cause them to sleep, slack, and generally not pay attention in all of their classes until their teachers become annoyed with their lifess presence.
I have been infected with senioritis and can no longer continue my school work.
by Yeslec January 15, 2009
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Senioritis: A term used colloquially in the United States and Canada to describe the decreased motivation toward studies displayed by students who are nearing the end of their high school or college careers. It is typically said to include slowness, procrastination, apathy regarding school work, and a tendency toward truancy.

Many high school and college students find themselves in a type of lame duck situation: their plans are made and a new chapter in their life is about to begin, so finishing the current chapter (the current term separating them from graduation) becomes just a formality or "holding pattern."

SENIORITIS
" Because now we have a better excuse to skip class and were starting early"
by hotice February 1, 2008
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noun. A deadly, vicious disease that struck seniors (12th graders) when they get sick of high school and cause them to get more lazy, down, and tired.
My Friend and I are going through senioritis and its ugly.
by asianvirtuous March 18, 2003
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When seniors in high school begin to not only be sick of school, but also of their fellow classmates.
"I used to really enjoy hanging out with Sarah, but after four years of dealing with her antics, I've realized that my senioritis has really turned me off to hanging out with her! She's so annoying!"
by Melanie. December 29, 2005
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Senioritis: The crippling disease of not giving a fuck.

Symptoms: Not giving a fuck
"Jimmy hasn't given a fuck for weeks!
It's okay, he has Senioritis."

"Johnny hasn't shown up for class all week", "Yeah, I know man, Senioritis hit hard this year."
by bagelskill September 13, 2011
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