Synonyms|782Antonyms|254|Broader|9Narrower|9Related|1.5k
2
not good
2
worthless(adjective, bad, useful, valuable, disagreeable)
1
baleful
1
black
1
counteractive
1
evil
1
foul
1
fruitless
1
hurting(adjective, bad, disagreeable)
1
ill
1
in vain
1
inimical
1
lethal(adjective, deadly)
1
mischievous
1
non-beneficial(adjective, gain, benefit, profit)
1
noxious
1
perilous
1
pernicious
1
pestilent
1
prejudicial
For more, visit Beneficial on Power Thesaurus
10 years ago|4.8k views|share |citing 
APASmart Define. (2016). beneficial thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/beneficial/thesaurus/antonyms
ChicagoSmart Define. 2016. "beneficial thesaurus" https://smartdefine.org/beneficial/thesaurus/antonyms (accessed September 29, 2026).
HarvardSmart Define 2016, beneficial thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/beneficial/thesaurus/antonyms>.
MLASmart Define. "beneficial thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/beneficial/thesaurus/antonyms>