Search Result for "tedium": 
Wordnet 3.0

NOUN (2)

1. the feeling of being bored by something tedious;
[syn: boredom, ennui, tedium]

2. dullness owing to length or slowness;
[syn: tediousness, tedium, tiresomeness]

The Collaborative International Dictionary of English v.0.48:

Tedium \Te"di*um\, n. [L. taedium, fr. taedet it disgusts, it wearies one.] Irksomeness; wearisomeness; tediousness. [Written also taedium.] --Cowper. [1913 Webster] To relieve the tedium, he kept plying them with all manner of bams. --Prof. Wilson. [1913 Webster] The tedium of his office reminded him more strongly of the willing scholar, and his thoughts were rambling. --Dickens. [1913 Webster]
WordNet (r) 3.0 (2006):

tedium n 1: the feeling of being bored by something tedious [syn: boredom, ennui, tedium] 2: dullness owing to length or slowness [syn: tediousness, tedium, tiresomeness]
Moby Thesaurus II by Grady Ward, 1.0:

77 Moby Thesaurus words for "tedium": alliteration, angst, anguish, anxiety, assonance, banality, boredom, changelessness, cheerlessness, chime, colorlessness, dingdong, discomfort, discomposure, discontent, dislike, displeasure, disquiet, dissatisfaction, doldrums, drabness, dread, dreariness, drone, dullness, emptiness, ennui, existential woe, flatness, grimness, harping, humdrum, inquietude, insipidity, insipidness, invariability, irksomeness, jingle, jingle-jangle, joylessness, lack of pleasure, long-windedness, malaise, monotone, monotony, nausea, near rhyme, nongratification, nonsatisfaction, painfulness, pitter-patter, repeated sounds, repetitiousness, repetitiveness, rhyme, routine, savorlessness, singsong, slant rhyme, spleen, stale repetition, staleness, tastelessness, tediousness, tiresomeness, trot, uncomfortableness, unease, uneasiness, unhappiness, unnecessary repetition, unpleasure, unsatisfaction, vapidity, vexation of spirit, wearisomeness, yawn
The Devil's Dictionary (1881-1906):

TEDIUM, n. Ennui, the state or condition of one that is bored. Many fanciful derivations of the word have been affirmed, but so high an authority as Father Jape says that it comes from a very obvious source -- the first words of the ancient Latin hymn _Te Deum Laudamus_. In this apparently natural derivation there is something that saddens.