Synonyms|453Antonyms|53|Broader|4Narrower|9Related|258

108 entries under adjective topic. ×

3
out of the question(expression, idiom, unreasonable, useless)
3
puzzling(extraordinary, exceptional, remarkable, particular)
3
undreamt of(verb, expression, phrasal verb)
3
unordinary(excellent, extraordinary, exceptional, special)
3
unutterable
3
unwonted(light, thin, strange, exceptional)
2
cryptic(unfathomable, impenetrable, opaque, unintelligible)
2
fantastical
2
far-fetched(extraordinary, amazing, doubtful, unlikely)
2
ineffable
2
remote(doubtful, dubious, improbable, impossible)
2
thin(light, extraordinary, strange, amazing)
2
undreamed of
2
unfathomable
2
unspeakable
2
unworkable
1
arcane(unusual, special, rare)
1
belief(extraordinary, strange, unbelievable, implausible)
1
beyond reason(expression, extraordinary, strange, unbelievable)
1
imcomprehensible(extraordinary, strange, unbelievable, implausible)
For more, visit Unimaginable on Power Thesaurus
11 years ago|6.2k views|share |citing 
APASmart Define. (2015). unimaginable thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unimaginable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unimaginable thesaurus" https://smartdefine.org/unimaginable/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, unimaginable thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unimaginable/thesaurus/synonyms>.
MLASmart Define. "unimaginable thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/unimaginable/thesaurus/synonyms>