ConnectWord · Ages 15-22 · In use
senioritis
The jokey illness of losing all motivation in your last year of high school or university, especially near the end.
Senioritis hit hard, I can't even open my binder.
For parents and educators
Normal and often temporary. If it comes with skipping a lot of class or a big drop in mood, look past the joke.
Where it came from
American school slang in print since the early 1900s, now in major dictionaries and common in Canada.