transcription, транскрипция: [ ʌnɪmædʒɪnəb(ə)l ]
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.
The scale of the fighting is almost unimaginable...
The children here have lived through unimaginable horrors.
= unbelievable
ADJ [ emphasis ]
• un‧im‧agi‧nably
Conditions in prisons out there are unimaginably bad.
ADV : ADV adj