Something so unusual, extreme, or beautiful that it's impossible to describe adequately with words.
From Latin 'in-' (not) + 'describable' (able to be described). Built from 'describe' which comes from Latin 'describere' (de- = down, scribere = to write), literally 'to write down or depict.'
Paradoxically, we use a word meaning 'cannot be described' constantly to describe amazing things—poets and writers use this word when they're admitting that language itself fails them!
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