Synonyms of the word 
TEDIOUSNESS → DULLNESS - TEDIUM - TIRESOMENESS
tediousness
- n. The quality of being tedious; tedium.
dullness
- n. The quality of being slow to understand things.
- n. The quality of being uninteresting.
- n. The lack of visual brilliance.
- n. (of an edge) bluntness.
tedium
- n. Boredom or tediousness; ennui.
tiresomeness
- n. the state or quality of being tiresome; wearisomeness; tediousness.
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