4
successfully(adverb, feature, state, characteristic)
1
happily(adverb, unhappily, successfully)
1
effectively
1
effectually
1
fortunately
1
fruitfully
1
luckily
1
proficiently
0
ably
0
absolutely
0
actively
0
actually
0
admirably
0
almost
0
aptly
0
blissfully
0
blithely
0
buoyantly
0
capably
0
cleverly
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APASmart Define. (2015). unsuccessfully thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unsuccessfully/thesaurus/antonyms
ChicagoSmart Define. 2015. "unsuccessfully thesaurus" https://smartdefine.org/unsuccessfully/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unsuccessfully thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unsuccessfully/thesaurus/antonyms>.
MLASmart Define. "unsuccessfully thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/unsuccessfully/thesaurus/antonyms>