Synonyms|607Antonyms|112|Broader|9Narrower|11Related|650

201 entries under adjective topic. ×

5
unsuitable(intolerable, ungovernable)
4
crazy
4
contrary to reason(expression, idiom, inaccessible, impossibility)
4
farcical
4
futile(desperate, unpromising, unfeasible, irresoluble)
4
incongruous(absurd, intolerable, ungovernable)
4
insurmountable(unreasonable, useless, absurd, unruly)
4
irrational(absurd, number)
4
outrageous(intolerable, ungovernable)
4
stupid
4
undesirable(unpleasant, terrible, extreme, painful)
4
unendurable(pain, extreme, painful, insufferable)
4
unsupportable(pain, unbearable)
4
useless(complete, wild, unreasonable, absurd)
3
cureless(broken, unchangeable, terminal, incurable)
3
doubtful(extraordinary, unreasonable, amazing, dubious)
3
fanciful
3
far-fetched(extraordinary, amazing, unlikely, implausible)
3
inaccessible
3
insuperable(hopeless, impassable, insurmountable)
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APASmart Define. (2016). impossible thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impossible/thesaurus/synonyms
ChicagoSmart Define. 2016. "impossible thesaurus" https://smartdefine.org/impossible/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, impossible thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impossible/thesaurus/synonyms>.
MLASmart Define. "impossible thesaurus" 9 March 2016. Web. 23 September 2026. <https://smartdefine.org/impossible/thesaurus/synonyms>