The definition of allege means to say something unproven or something without any facts to verify it.(verb)
To report in a newspaper that a person has broken the law without that person being found guilty is an example of allege.
See allege in Webster's New World College Dictionary
Origin: ME aleggen, to produce as evidence; form < OFr esligier < VL *exlitigare < L ex-, out of + litigare (see litigate); meaning infl. by OFr alleguer, declare on oath < L allegare, to send, mention, adduce < ad-, to + legare, to send: see legate
See allege in American Heritage Dictionary 4
transitive verb al·leged, al·leg·ing, al·leg·es
Origin: Middle English alleggen
Origin: , from Old French alegier, to vindicate, justify (influenced by aleguer, to give a reason)
Origin: , from esligier, to pay a fine, justify oneself
Origin: , from Late Latin *exlītigāre, to clear at law
Origin: : Latin ex-, out; see ex-
Origin: + Latin lītigāre, to sue; see litigate.
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