Ted, Tom and I may be missing (7)
I believe the answer is:
omitted
'missing' is the definition.
(I've seen this in another clue)
'ted tom and i may be' is the wordplay.
'and' is a charade indicator (letters next to each other).
'may be' indicates anagramming the letters.
'ted'+'tom'='tedtom'
'tedtom' after 'i' is 'itedtom'.
'itedtom' is an anagram of 'OMITTED'.
(Other definitions for omitted that I've seen before include "Hairdressing" , "let go" , "Leave undone or leave out" , "Left out - neglected" , "not mentioned" .)