The feeling of being bored by something tedious; SYN. ennui, tedium.
The state of being weary and restless through lack of interest.

ETYM French, from Latin in odio in hatred. Related to Annoy.
A feeling of weariness and disgust; dullness and languor of spirits, arising from satiety or want of interest; tedium.
(French) boredom. ennuyant, boring.

Quality of being dull and boring; stodginess; lack of sufficient ventilation

ETYM Latin taedium, from taedet it disgusts, it wearies one.
Tediousness.