5
successfully(adverb, feature, state, characteristic)
4
profitably
3
fruitfully
1
abundantly
1
effectively
1
productively
0
actively
0
advantageously
0
aptly
0
beneficially
0
constructively
0
creatively
0
dynamically
0
dynamicly
0
effectually
0
efficaciously
0
efficiently
0
expectantly
0
fortunately
0
functionally
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APASmart Define. (2015). fruitlessly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fruitlessly/thesaurus/antonyms
ChicagoSmart Define. 2015. "fruitlessly thesaurus" https://smartdefine.org/fruitlessly/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, fruitlessly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fruitlessly/thesaurus/antonyms>.
MLASmart Define. "fruitlessly thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/fruitlessly/thesaurus/antonyms>