Mind already regularly relaxed (5)
I believe the answer is:
idled
'relaxed' is the definition.
(I've seen this before)
'mind already regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'mind'+'already'='mindalready'
The alternating letters of 'mindalready' are 'IDLED'.
(Other definitions for idled that I've seen before include "Turned over" , "Of engine, just ticked over" , "sat back" , "not worked" , "was unoccupied" .)