senioritis

[seen-yuh-rahy-tis]

noun

Informal: Facetious. a decline in motivation or academic performance that supposedly afflicts some seniors in high school, especially in their last term.

Origin of senioritis

First recorded in 1955–60; senior + -itis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019