Synonyms|325Antonyms|151|Broader|5Narrower|3Related|712

60 entries under adjective topic. ×

7
inconceivable(reasonable, belief, unreasonable, unbelievable)
7
incredible(unreasonable, unbelievable)
6
unbelievable(unreasonable, plausible)
5
unthinkable(unusual, unreasonable, unbelievable, incredible)
4
implausible(reasonable, unreasonable, likely, unbelievable)
4
improbable(unreasonable, likely, unbelievable)
4
unimaginable(unreasonable, unbelievable)
3
dubious(clear, honest)
3
ridiculous(stupid, funny)
3
suspicious(careless, certain, doubtful, fishy)
3
unconvincing(unreasonable, unbelievable, persuasive)
3
unlikely(reasonable, unreasonable, likely, unbelievable)
3
unreliable(unreasonable, unbelievable)
2
far-fetched(hard, natural)
2
doubtful
2
fantastic
2
impossible
2
questionable
2
tall(unreasonable, little, exaggerated)
2
unrealistic(practical, believable)
<123>
For more, visit Believable on Power Thesaurus
11 years ago|1.7k views|share |citing 
APASmart Define. (2015). believable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/believable/thesaurus/antonyms
ChicagoSmart Define. 2015. "believable thesaurus" https://smartdefine.org/believable/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, believable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/believable/thesaurus/antonyms>.
MLASmart Define. "believable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/believable/thesaurus/antonyms>