Newts somewhat bereft, sadly (4)
I believe the answer is:
efts
'newts' is the definition.
(eft is a kind of newt)
'somewhat bereft sadly' is the wordplay.
'somewhat' indicates a hidden word.
'EFTS' can be found hidden inside 'bereft sadly'.
(Other definitions for efts that I've seen before include "Kind of newts" , "Amphibians" , "Old lizards" , "Baby newts" .)