Define unimaginable. unimaginable synonyms, unimaginable pronunciation, unimaginable translation, English dictionary definition of unimaginable. adj. Not conceivable in the imagination. …

UNIMAGINABLE definition: difficult or impossible to believe; inconceivable See examples of unimaginable used in a sentence.

The meaning of UNIMAGINABLE is not imaginable or comprehensible. How to use unimaginable in a sentence.

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Dec 14, 2025 · Adjective unimaginable (comparative more unimaginable, superlative most unimaginable) Unable to be imagined; inconceivable or mind-boggling; beyond belief.

Something that is unimaginable is difficult to imagine because it is so bad, good, big, etc…. Learn more.

If you describe something as unimaginable, you are emphasizing that it is difficult to imagine or understand properly, because it is not part of people's normal experience.

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