1
profitless
1
punitive(adjective, punishment)
1
querulous
1
ruinous(adjective, devastating, disastrous)
1
undesireworthy(adjective, good feelings, good emotions)
1
unhealthful
1
unhealthy
1
unrewarding(adjective, bad, disagreeable, working)
1
unsatisfied
1
unserviceable
1
unwholesome
0
fatal
0
menaceworthy(adjective, good feeling)
0
nasty
0
negative
0
wicked
0
abortive
0
aggravating
0
ailing
0
allergic to(expression, good, friendly)
10 years ago|4.8k views|share |citing 
APASmart Define. (2016). beneficial thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/beneficial/thesaurus/antonyms
ChicagoSmart Define. 2016. "beneficial thesaurus" https://smartdefine.org/beneficial/thesaurus/antonyms (accessed September 30, 2026).
HarvardSmart Define 2016, beneficial thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/beneficial/thesaurus/antonyms>.
MLASmart Define. "beneficial thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/beneficial/thesaurus/antonyms>