Idle Dorothy entertains right man (7)
I believe the answer is:
dormant
'idle' is the definition.
(I've seen this in another clue)
'dorothy entertains right man' is the wordplay.
'dorothy' becomes 'dot' (nickname for someone called Dorothy).
'entertains' means one lot of letters goes inside another.
'right' becomes 'r' (common abbreviation).
'r'+'man'='rman'
'dot' going around 'rman' is 'DORMANT'.
(Other definitions for dormant that I've seen before include "Comatose" , "Suspended" , "Temporarily inactive, being mordant" , "Lying inactive as if in sleep" , "Inert" .)