Too like members of real society (4)
I believe the answer is:
also
'too' is the definition.
(synonyms)
'members of real society' is the wordplay.
'members of' indicates a hidden word (the letters are 'members' of the clue).
'ALSO' can be found hidden inside 'real society'.
'like' acts as a link.
(Other definitions for also that I've seen before include "in accompaniment" , "Likewise" , "Old" , "'Besides, moreover (4)'" , "admitted to Royal Society > too" .)