Aver/əˈvɜːr/ Definition 1 of 2Pro Tip 1/3Confidence Required When using 'aver,' show confidence in the statement you're making. I must aver that I completed the work myself, without any help. Pro Tip 2/3Truth Assertion 'Aver' is about claiming truthfulness, not making a guess or assumption. The scientist averred that the data supported the theory. Pro Tip 3/3Formal Tone Use 'aver' in formal or academic discussions rather than casual conversations. The historian averred that the document was authentic.