unthinkable

Synonyms

incredible, unbelievable

beyond belief or understanding

impossible

not capable of occurring or being accomplished or dealt with

impossible, inconceivable, out of the question, unimaginable

totally unlikely

Antonyms:

thinkable

capable of being conceived or imagined or considered

believable, credible

capable of being believed

possible

capable of happening or existing

cogitable, ponderable

capable of being thought about

conceivable, imaginable

capable of being imagined

presumable, supposable, surmisable

capable of being inferred on slight grounds

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