Tedium

имя существительное скука; утомительность Синоним(ы): boredom, ennui

Большой англо-русский словарь

Tedium

noun Etymology: Latin taedium disgust, irksomeness, from taedēre to disgust, weary 1. the quality or state of being tedious; tediousness; also boredom 2. a tedious period of time Example: long tediums of strained anxiety — H. G. Wells

Merriam-Webster's Collegiate Dictionary