2 entries under unbelievable topic. ×

6
believable(adjective, unreasonable, likely)
4
credible(adjective, unsound, believable)
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). improbable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/improbable/thesaurus/antonyms
ChicagoSmart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, improbable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/improbable/thesaurus/antonyms>.
MLASmart Define. "improbable thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/improbable/thesaurus/antonyms>