English
junioritis
From junior + -itis, on the pattern of senioritis.
Formed from junior + -itis
Proto-Indo-European *h₂ey- ‘vital force’
…
Proto-Italic *juwō ‘young’
Latin iuvenis ‘young’
Latin iuvenior ‘younger’
Latin junior
English junior
Today it means
noun A tendency of juniors in high school to slack off as if they were seniors with senioritis.
Language periods are conventional ranges, not dates for this word.
Etymograph / junioritis