Your unworthy end (3)

I believe the answer is:

thy

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

'your' is the definition.
('thy' historically meant 'your')

'unworthy end' is the wordplay.
'THY' is hidden in amongst the letters.
But, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for thy that I've seen before include "Your (archaic)" , "Your, of old" , "Belonging to thee" .)

I've seen this clue in the Evening Standard.

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