Crossword Genius

Claim sty had become awe-inspiring (8)

Ross

I believe the answer is:

mystical

I'm a little stuck... Click here to teach me more about this clue!

'awe-inspiring' is the definition.
Both the definition and answer are adjectives. Perhaps you can see an association between them that I don't see?

'claim sty had' is the wordplay.
'claim sty' can be anagrammed to 'MYSTICAL'.
Though, I am unsure how this is indicated.

'become' is the link.

Can you help me to learn more?

(Other definitions for mystical that I've seen before include "Sacredly obscure" , "Inspiring spiritual awe" , "Inexplicable" , "Occult, spiritual" , "'Esoteric, spiritual (8)'" .)

I've seen this clue in The Mirror.
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