Clearly hiding peer (4)
I believe the answer is:
earl
'peer' is the definition.
(I know that earl is a type of peer)
'clearly hiding' is the wordplay.
'hiding' indicates the answer is hidden within the clue.
'EARL' is hidden in the letters of 'clearly'.
(Other definitions for earl that I've seen before include "Male member of British nobility" , "Male equivalent of a countess" , "Countess his wife" , "A lord like Lear" , "Husband of a countess" .)