Unthinkable

"Unthinkable" in French

impensable

(inconceivable or unimaginable; extremely improbable in a way that goes against common sense)

inconcevable

(inconceivable or unimaginable; extremely improbable in a way that goes against common sense)

incroyable

(incapable of being believed; incredible)

inimaginable

(inconceivable or unimaginable; extremely improbable in a way that goes against common sense)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.