The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for gruff is "rough or stern in manner or speech.", the definition for repel is "To resist, reject.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for repel is "to resist, reject.", the definition for supple is "Flexible.", and the definition for avian is "Relating to birds."

The definition for appraise is "To evaluate the worth of." Used in a sentence: Simone, an expert in African sculpture, was asked to appraise the ambassador's collection of masks. The definition for repel is "to resist, reject.", the definition for insolence is "Boldness or rudeness.", and the definition for iridescent is "Having a lustrous or attractivve quality."

The definition for apathetic is "Showing little or no emotion." Used in a sentence: Carmine was concerned about his usually cheerful brother's apathetic attitude. The definition for nurture is "to further the development of.", the definition for egotist is "Self–important person.", and the definition for melodious is "Having a pleasing melody."

The definition for ethical is "Conforming to accepted standards." Used in a sentence: Mary did the ethical thing and turned in the diamond necklace she found. The definition for fragile is "delicate.", the definition for prominence is "Importance.", and the definition for serenity is "Calmness."