Synonyms|67Antonyms|76|Broader|12Narrower|14Related|76
1
cornucopian(adjective, exuberance)
1
creative(adjective, exuberance)
1
effective immediately(expression, effect, success, productivity)
1
effectively(adverb, effect, success, productivity)
1
effectual(adjective, effect, success, productivity)
1
efficacious(adjective, effect, productivity)
1
efficient(adjective, effect, productivity)
1
efficiently(adverb, effect, success, productivity)
1
fat(adjective, exuberance)
1
fecund(adjective, exuberance)
1
fertile(adjective, exuberance)
1
fructuous(adjective, exuberance)
1
fruitful(adjective, effect, productivity)
1
helpful(adjective, success)
1
hyperefficient(adjective, effect, success, productivity)
1
in an effective way(expression, effect, success, productivity)
1
in an efficient manner(expression, effect, success, productivity)
1
in an efficient way(adverb, effect, success, productivity)
1
inventive(adjective, exuberance)
1
like a blue streak(expression, effect, success, productivity)
For more, visit In_vain on Power Thesaurus
10 years ago|253 views|share |citing 
APASmart Define. (2016). in vain thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/in_vain/thesaurus/antonyms
ChicagoSmart Define. 2016. "in vain thesaurus" https://smartdefine.org/in_vain/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2016, in vain thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/in_vain/thesaurus/antonyms>.
MLASmart Define. "in vain thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/in_vain/thesaurus/antonyms>