Synonyms of irksomeness

1 Syllable
yawn
2 Syllables
drabness, tedium, ennui, deadness, doldrums
3 Syllables
routine, sameness, dreariness, boredoms, boredom, tediousness, jadedness
4 Syllables
aggravations, lifelessness, aggravation, banality, world-weariness
5 Syllables
tiresomeness, wearisomeness, pococurantism