Onset of trouble I passed on sorted out (6)

I believe the answer is:
tidied
'sorted out' is the definition.
Although both the answer and definition are past participle verbs, I cannot see how they can define each other.
'onset of trouble i passed' is the wordplay.
'onset of' says to take the initial letters.
'passed' becomes 'died' (pass can mean to die).
The initial letter of 'trouble' is 't'.
't'+'i'+'died'='TIDIED'
'on' acts as a link.
Can you help me to learn more?
(Other definitions for tidied that I've seen before include "put away" , "Arranged neatly" , "Neatened" , "straightened" , "Made neat and orderly" .)
