So-called (7)
'so-called' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for alleged that I've seen before include "Asserted - unproven" , "So-called" , "Declared without proof" , "Deal leg (anag.)" , "Declared but not proved; maintained" .)
(Other definitions for titular that I've seen before include "such a bishop has given old name" , "See" , "Having name of ruler but without real authority" , "as a figurehead" , "Like certain churches" .)