See allege in Webster's New World Roget's A-Z Thesaurus II
verb
To put into words positively and with conviction:
affirm, argue, assert, asseverate, aver, avouch, avow, claim, contend, declare, hold, maintain, say, state. Idiom: have it. See affirm- (Archaic)
To bring forward for formal consideration:
adduce, cite, lay1, present2. See law, words
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