Ungenuinely is a term used to describe something that is not authentic or true. There are several synonyms that can be used to convey the same meaning, and these include insincerely, disingenuously, falsely, deceitfully, and hypocritically. Insincerely implies that the genuineness is lacking in an effort to deceive or mislead someone, while disingenuously suggests that the lack of authenticity is deliberate. Falsely indicates something that is untrue or deceptive, and deceitfully refers to behavior that is intended to deceive or trick someone. Hypocritically suggests that there is a mismatch between what someone says and what they do. Each of these synonyms can be used interchangeably with ungenerously to convey the same meaning of inauthenticity.