23 entries under adverb topic. ×

5
doubtfully
4
possibly
3
dubiously
3
unclearly
2
questionably
2
uncertainly
2
indefinite(adjective, unmistakably, authentically, doubtfully)
2
undecidedly
1
ambiguously
0
apocryphally
0
apprehensively
0
bleakly
0
contentiously
0
openly
0
reservedly
0
shiftily
0
tentatively
0
uncertain(unmistakably, perceptibly, doubtfully, palpably)
0
undeterminedly
0
unsettledly
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APASmart Define. (2015). undoubtedly thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undoubtedly/thesaurus/antonyms
ChicagoSmart Define. 2015. "undoubtedly thesaurus" https://smartdefine.org/undoubtedly/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, undoubtedly thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undoubtedly/thesaurus/antonyms>.
MLASmart Define. "undoubtedly thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/undoubtedly/thesaurus/antonyms>