Left out (8)
'left out' is the definition.
(to omit something is to leave it out)
This is all the clue.
(Other definitions for omitted that I've seen before include "Failed" , "Left out - neglected" , "Leave undone or leave out" , "forgotten" , "Overlooked" .)
'left out' is the definition.
('exclude' can be a synonym of 'leave out')
This is all the clue.
(Other definitions for excluded that I've seen before include "Left out" , "Kept out from place or group" , "Ruled out" , "Denied access" , "'Debarred, shut out (8)'" .)
'left out' is the definition.
('except' can be a synonym of 'leave out')
This is the entire clue.
(Another definition for excepted that I've seen is " Excluded".)