The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for extant is "currently existing.", the definition for duplicity is "Deceptive thought, speech, or action.", and the definition for extenuating is "Partially excusing."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for derelict is "abandoned.", the definition for clairvoyance is "Ability to see things beyond ordinary perception.", and the definition for revive is "To bring back to life."

The definition for procrastinate is "To put off intentionally." Used in a sentence: Yvonne's father urged, "Don't procrastinate. Clean your room right away." The definition for buffer is "protective barrier.", the definition for incisive is "Impressively direct and decisive.", and the definition for periodic is "Occurring at regular intervals."

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 inflammatory is "tending to excite anger.", the definition for frugal is "Thrifty, cheap.", and the definition for clarity is "Clearness."

The definition for deferment is "The act of delaying." Used in a sentence: Sybil was frustrated by the deferment of her much anticipated vacation. The definition for euphoria is "feeling of great happiness.", the definition for scapegoat is "Someone who bears the blame for others.", and the definition for prominence is "Importance."