1
mum
1
mute
1
nongregarious
1
penalty
1
pickle(noun, ease, situation)
1
plague(advantage, blessing)
1
plight(noun, difficulty, situation, advantage, dilemma)
1
reclusive
1
remuneration
1
reserved
1
reticent
1
rub(noun, difficulty, problem, dullness)
1
sad(adjective, feeling, buoyant, blissful)
1
setback(noun, advance, boost, disappointment)
1
silent
1
slump(noun, decline, increase, failure)
1
taciturn
1
unsocial
1
vice
1
vileness(benefit, cheer)
10 years ago|3.3k views|share |citing 
APASmart Define. (2016). boon thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/boon/thesaurus/antonyms
ChicagoSmart Define. 2016. "boon thesaurus" https://smartdefine.org/boon/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, boon thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/boon/thesaurus/antonyms>.
MLASmart Define. "boon thesaurus" 23 March 2016. Web. 23 September 2026. <https://smartdefine.org/boon/thesaurus/antonyms>