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To be lazy, sluggish. Often spending one's life in bed, sleeping one's life away.

What fun!
Je suis lΓ©thargique. J'aime le sommeil.
by Lorelili March 30, 2005
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4
The belief of being lazy, procrastinating, or not doing if it is of no importance to you. Also known as the religion of laziness
Teacher:Did you finish your assignment today?

You:Nope its against my religion.

Teacher:What do you mean?

You:Im lethargic, you know the belief of being lazy, procrastinating, or not doing if it is of no importance to you.

Other student:Dude i wanna be lethergic!

Teacher:Hmmmmm?!?
by General Kaar November 06, 2007
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5
Blank as shit, Like super lazy and sluggish. like you have no fucking expression.
danny- dude, that bitch is lethargic its like talking to brick wall
sammy- i think shes sexy, and inviting,
by Jessica Campbell July 05, 2008
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lethargic is a word used when somebody is acting drunk and lazy. Drowsy or sluggish.
Sloths are lethargic; they move around four inches a day.
by Taylor swift lover December 14, 2011
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7
What one is when u give blood then try and play a soccer game
Coach During Warm up: Bryan your lookin very lethargic
Bryan: huh sure? (to friend) dawbateef what is lethargic
Friend: IDFK
by Bryanft October 10, 2005
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