Unimaginable
/ˌʌnɪˈmædʒɪnəbəl/
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Definition
(adj) Unable to be imagined; inconceivable or mind-boggling; beyond belief.
Sentence Examples
The size of the universe is unimaginable.
They did an unimaginable job.
CEFR Practice Quiz
The luxury of the hotel was almost ____, with every possible comfort provided for the wealthy guests today.