Meaning of “allege” - Learner’s Dictionary

allege

verb [ T ] uk us /əˈledʒ/

to say that someone has done something wrong or illegal, but not prove it:

[ often passive ] The teacher is alleged to have hit a student.
[ + (that) ] He alleges that Bates attacked him.

(Definition of “allege” from the Cambridge Learner’s Dictionary © Cambridge University Press)