Allegate is a commonly used word that means to make a claim or accusation without providing conclusive evidence. Synonyms for "allegate" include accuse, charge, contend, assert and maintain. "Accuse" suggests more of a formal charge of wrongdoing against someone, while "charge" implies a legal accusation. "Contend" and "assert" are stronger synonyms, suggesting a confident expression of one's beliefs or opinions. "Maintain" is similar, suggesting that one is continuing to assert a belief or position despite resistance or criticism. Whatever word you choose to use, it's important to ensure that you have sufficient supporting evidence to back up your claim.