| unlikely(adjective, adverb, reasonable, unmistakably, possibly) | |
| doubtful | |
| eye-opening | |
| implausible(adjective, reasonable, likely, unlikely, plausible) | |
| impossible(adjective, unlikely) | |
| improbable(adjective, likely) | |
| inconceivable(adjective, reasonable, imaginable) | |
| foul | |
| incredible | |
| outside(adjective, slight, slim, middle) | |
| unbelievable(adjective, plausible) | |
| dubious(adjective, clear, honest) | |
| fantastic | |
| farfetched(adjective, unbelieveable) | |
| fishy(adjective, doubtful, suspicious) | |
| flimsy | |
| remote(adjective, unlikely, improbable) | |
| underdog | |
| unimaginable | |
| unthinkable |
For more, visit
Likely on
Power Thesaurus
| APA | Smart Define. (2016). likely thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/likely/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "likely thesaurus" https://smartdefine.org/likely/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, likely thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/likely/thesaurus/antonyms>. |
| MLA | Smart Define. "likely thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/likely/thesaurus/antonyms> |