16
half-assed
4
sincerely(adverb, false, lie, manner)
3
forthright
3
honest
3
overhand
2
aboveboard(noun, adjective)
2
good
2
loyal
1
decent
1
frank
1
honorable
1
open
1
overarm
1
overhanded
1
public
1
round-arm
1
sincere
1
square
1
straight
0
acknowledged
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APASmart Define. (2015). underhand thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underhand/thesaurus/antonyms
ChicagoSmart Define. 2015. "underhand thesaurus" https://smartdefine.org/underhand/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, underhand thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underhand/thesaurus/antonyms>.
MLASmart Define. "underhand thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/underhand/thesaurus/antonyms>