Crossword Genius

It's most hurtful - therefore take a break (6)


I believe the answer is:


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'it's most hurtful' is the definition.
I can't judge whether this definition defines the answer.

'therefore take a break' is the wordplay.
'therefore' becomes 'so' ('so' can mean 'consequently' or 'therefore').
'take a break' becomes 'rest' (to have a rest is to take a break).

Can you help me to learn more?

(Other definitions for sorest that I've seen before include "Stores in most painful way" , "In greatest discomfort" , "Most aggrieved" , "Most wounded" , "Most tender" .)

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