Synonyms|618Antonyms|255|Broader|10Narrower|13Related|1.7k
2
operative(adjective, active, passive, influential, functioning)
2
persuasive(adjective, effective, influential)
2
rough-and-ready
2
sufficient(adjective, strong, fit, successful)
2
trenchant
1
adroit
1
alive
1
applicable
1
available
1
availing
1
beneficial
1
deadly
1
dexterous(adjective, strong, fit, successful)
1
energetic
1
expert(adjective, strong, fit, successful)
1
feasible
1
functioning
1
high earning
1
kick-ass
1
omnificent
For more, visit Ineffective on Power Thesaurus
10 years ago|2.4k views|share |citing 
APASmart Define. (2016). ineffective thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ineffective/thesaurus/antonyms
ChicagoSmart Define. 2016. "ineffective thesaurus" https://smartdefine.org/ineffective/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, ineffective thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ineffective/thesaurus/antonyms>.
MLASmart Define. "ineffective thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/ineffective/thesaurus/antonyms>