Synonyms of the word 
TIRESOMENESS → DULLNESS - TEDIOUSNESS - TEDIUM
tiresomeness
- n. the state or quality of being tiresome; wearisomeness; tediousness.
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.
tediousness
- n. The quality of being tedious; tedium.
tedium
- n. Boredom or tediousness; ennui.
If you are interested in words, visit the following sites :
- wiktionary.org/tiresomeness For complete definition of a word
- 1word.ws/tiresomeness to play with words, suffixs, prefixs, etc.