Private Harry cuddles without energy (8)
I believe the answer is:
secluded
'private' is the definition.
('secluded' can be similar in meaning to 'private')
'harry cuddles without energy' is the wordplay.
'harry' indicates anagramming the letters (I've seen this in other clues).
'without' indicates putting letters inside ('without' can be similar in meaning to 'outside').
'energy' becomes 'e' (physics symbol as in E=mc2).
'cuddles' is an anagram of 'secludd'.
'secludd' going around 'e' is 'SECLUDED'.
(Other definitions for secluded that I've seen before include "Private - withdrawn" , "Sheltered and private" , "Quiet and private" , "Hidden from general view" , "Cloistered, sequestered" .)