5
unanticipated(great, excellent, superb, super, groovy)
5
unexpected(great, excellent, superb, super, groovy)
5
unforeseen(great, excellent, superb, super, groovy)
5
unpredicted(great, excellent, superb, super, groovy)
5
unsubstantial(adjective, thin, extraordinary, strange, unreasonable)
4
beautiful(great, excellent, superb, super, groovy)
4
cute(great, excellent, superb, super, groovy)
4
dubitable(adjective, uncertain, doubtful, shaky, unsure)
4
good(great, excellent, superb, super, groovy)
4
handsome(great, excellent, extraordinary, superb, super)
4
imaginative(great, excellent, superb, super, groovy)
4
impractical(adjective, silly, unreasonable, unlikely, unrealistic)
4
nice(great, excellent, superb, super, groovy)
4
peculiar
4
staggering(great, excellent, strange, superb, super)
4
terrific(adjective, great, excellent, superb, super)
4
unpromising(shaky, unlikely)
3
adorable(great, excellent, superb, super, groovy)
3
aesthetic(great, excellent, superb, super, groovy)
3
agreeable(great, excellent, superb, super, groovy)
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APASmart Define. (2015). improbable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms
ChicagoSmart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, improbable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>.
MLASmart Define. "improbable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms>