Crossword Genius

I dread setting poorly, having lost judgment (13)

Ross

I believe the answer is:

disintegrated

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'lost judgment' is the definition.
Although both the answer and definition are past participle verbs, I cannot see how one could define the other.

'i dread setting poorly' is the wordplay.
'poorly' indicates an anagram (a poor spelling).
'i'+'dread'+'setting'='idreadsetting'
'idreadsetting' is an anagram of 'DISINTEGRATED'.

'having' acts as a link.

Can you help me to learn more?

(Other definitions for disintegrated that I've seen before include "Went to bits" , "Broke up" , "Fell to pieces" , "Fell apart" , "Fallen apart" .)

I've seen this clue in The Times.
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