unthinkable

== English == === Etymology === From un- +‎ think +‎ -able. === Pronunciation === IPA(key): /ʌnˈθɪŋkəbəl/ === Adjective === unthinkable (comparative more unthinkable, superlative most unthinkable) That cannot be believed. Near-synonyms: unbelievable, incredible, inconceivable Inconceivable or unimaginable; extremely improbable in a way that goes against common sense. Near-synonyms: inconceivable, imponderable Extremely improper; extremely at odds with norms of expected behavior. Near-synonyms: taboo, unspeakable, unutterable, inconceivable ==== Translations ==== === Noun === unthinkable (countable and uncountable, plural unthinkables) Something, or various things collectively, that one dare not think about, dare not do, or dare not think about doing. Near-synonym: unspeakable do the unthinkable;   did the unthinkable ==== References ==== Douglas Harper (2001–2026), “unthinkable”, in Online Etymology Dictionary.