Annoyingly pester men caught in wrong legally (7)
I believe the answer is:
torment
'annoyingly pester' is the definition.
(torment can mean to harass or pester)
'men caught in wrong legally' is the wordplay.
'caught in' means one lot of letters goes inside another.
'wrong legally' becomes 'tort' (I've seen this in another clue).
'men' inserted into 'tort' is 'TORMENT'.
(Other definitions for torment that I've seen before include "Severe pain" , "Harry" , "Great agony" , "Persecute" , "Harass" .)