A disease that usually hits high school seniors after they have been accepted to college, or their mid-year grades have been sent out. Symptoms include not caring about one's studies or grades, complete and total lazyness, and skipping classes. Senioritis is usually cured upon graduation from high school. Once this occurs, the student realizes that he/she must do a lot more work in college.
Teacher: Ok guys, 13 of you didn't do your homework. Don't let Senioritis set in!
Student: Who cares, we've been accepted to college and we're graduating in two months!
Teacher: Well, colleges can take away your acceptance.
Student: No they cant.
by Tom Blake September 10, 2006
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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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A disease that occurs when high school seniors have applied to and/or been accepted to college. Senioritis cripples any and all drive to do homework, and seniors replace homework time with activities like parties, pranks, and reading about senioritis on Urban Dictionary.
I got senioritis after finishing my application; why would I want to write an essay for English? Let's go play tag.
by comintern December 14, 2009
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illness that generally strikes high school seniors; some symptoms of this illness include procrastination, laziness, excessive absences and tardies, skipping class, a change in normal attire, (ex. over use of extremely casual friday), senior pranks and multiple, multiple senior skip days. the only known cure for this bizarre illness is graduation.
why aren't you in school today?

bad case of senioritis..
by wnhogan December 10, 2008
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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
memories
by Jazminfggo January 15, 2009
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When we reach senior year, we just don't give a damn anymore. it's over. we're better than EVERYONE, including the school's staff. We're unbeatable and immortal until August when we become freshmen again.
-You and 26 of your closest friends pile into a girls' purple hand-me-down minivan, stop at another friends house, steal alcohol and proceed to your basement to play beer pong and take shots. All before 11:30 am.

-"Wait, where is this cafeteria you speak of? is it anywhere near McDonald's?"

-"How do you cure Senioritis?!"

"Not sure man, hit this L while we ponder that thought."
by vivishayurbnbn January 4, 2008
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