Comfortable empty hollow bears like (4)
I believe the answer is:
easy
'comfortable' is the definition.
(I know that comfortable can be written as easy)
'empty hollow bears like' is the wordplay.
'hollow' says to hollow out the word (remove centre letters) (the word is hollowed out).
'bears' indicates putting letters inside (some letters carry or bear others).
'like' becomes 'as'.
'empty' with its centre taken out is 'ey'.
'ey' placed around 'as' is 'EASY'.
(Other definitions for easy that I've seen before include "Simply achieved" , "Promiscuous" , "Straightforward" , "for a piece of cake" , "Achieved without effort" .)