AskDefine | Define unthinkable

Dictionary Definition

unthinkable adj : incapable of being conceived or considered [ant: thinkable]

User Contributed Dictionary



  1. incapable of being believed; incredible
  2. inconceivable or unimaginable; extremely improbable in a way that goes against common sense
    Nothing is unthinkable, nothing impossible to the balanced person, provided it comes out of the needs of life and is dedicated to life's further development - Lewis Mumford


incapable of being believed; incredible

Synonyms, Antonyms and Related Words

a bit thick, a bit thin, absurd, barred, beyond belief, closed-out, contrary to reason, doubtable, doubtful, dubious, dubitable, excluded, extraordinary, hard of belief, hard to believe, hopeless, illogical, implausible, impossible, improbable, incomprehensible, inconceivable, incredible, laughable, logically impossible, ludicrous, mind-blowing, mind-boggling, not deserving belief, not possible, open to doubt, open to suspicion, oxymoronic, paradoxical, passing belief, preposterous, problematic, prohibited, questionable, rare, ridiculous, ruled-out, self-contradictory, singular, staggering belief, suspect, suspicious, tall, thick, thin, unacceptable, unbelievable, uncommon, unconvincing, unearthly, ungodly, unimaginable, unique, unlikely, unordinary, unusual, unwonted, unworthy of belief
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