Synonyms of 'allegedly'
supposedlyDictionary, apparently, reportedly
His van allegedly struck her as she was crossing the street.
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You use apparently to indicate that the information you are giving is something that you have heard, but you are not certain that it is true.
Apparently the girls are not amused by the situation.
If you say that something is reportedly true, you mean that someone has said that it is true, but you have no direct evidence of it.
They have reportedly agreed.
Thesaurus for allegedly from the Collins English Thesaurus
reportedly ; supposedly