Others not so much on edge (8)
I believe the answer is:
restless
'on edge' is the definition.
(thesaurus)
'others not so much' is the wordplay.
'others' becomes 'rest' (eg the rest of a group).
'not so much' becomes 'less' (I've seen this in another clue).
'rest'+'less'='RESTLESS'
(Other definitions for restless that I've seen before include "Unable to settle" , "Unable to relax or be still" , "Fidgety, uneasy" , "Constantly moving about or fidgeting" , "Worried and uneasy" .)