Does misuse one's power, going in to get rid of (7)
I believe the answer is:
dispose
'get rid of' is the definition.
(I've seen this in another clue)
'does misuse one's power going in' is the wordplay.
'misuse' is an anagram indicator.
'one's' becomes 'I's' (Roman numeral).
'power' becomes 'p' (symbol in physics).
'going in' indicates putting letters inside.
'is'+'p'='isp'
'does' is an anagram of 'dose'.
'dose' placed around 'isp' is 'DISPOSE'.
'to' is the link.
(Other definitions for dispose that I've seen before include "Place in order; bestow" , "Place in order (as God does)" , "Incline" , "Arrange - to get rid (of)" , "Arrange (in order)" .)