unimaginable
adj. B2 Upper Intermediate US //ˌənɪˈmædʒɪnəbəɫ// UK //ˌʌnɪmˈædʒɪnəbəl// unimag·in·able
adj. impossible to think of or imagine because it is so extreme, big, or unusual. You use this when something is so different from your life that you cannot picture it.
adj. impossible to comprehend or conceive of mentally. Often used to describe extreme scales of suffering, wealth, or complexity that exceed ordinary human experience.
The scale of the disaster was unimaginable.
Living in a world without the internet is almost unimaginable for the younger generation.
The explorers faced unimaginable hardships as they trekked across the frozen wasteland with dwindling supplies and no hope of rescue.
Usage
Often used to modify nouns representing abstract concepts like 'wealth', 'pain', 'cruelty', or 'beauty'.