Synonyms for “unpleasantness”

noun

1. =  hostility, animosity, antagonism, bad feeling, malice, rudeness, offensiveness, abrasiveness, argumentativeness, unfriendliness, quarrelsomeness, ill humour or will • Most offices are riddled with sniping and general unpleasantness.
   opposites: friendliness, pleasantness, good humour or will, congeniality
2. =  nastiness, awfulness, grimness, trouble, misery, woe, ugliness, unacceptability, dreadfulness, disagreeableness, horridness • the unpleasantness of surgery and chemotherapy
   opposites: delight, acceptability, pleasantness, agreeableness