Where does “tedium” come from?

Tedium comes from Latin taedium, derived from the verb taedeo, meaning to weary or cause disgust.

tedium (English): Boredom or tediousness; ennui

Definitions

Step	Language	Word	Meaning
1	Old French	tedieus	—
2	Late Latin	taediosus	tedious, boring, wearisome, monotonous
3	Latin	taedium	weariness, tedium, boredom, ennui; disgust,...
4	Latin	taedeo	I am disgusted or offended; I am tired, weary or...