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 heinous is "shockingly evil.", the definition for inflammatory is "Tending to excite anger.", and the definition for epistolary is "Contained or carried on in letters."

The definition for exasperation is "The state of being irritated." Used in a sentence: The longer Jorge waited in line at the ticket counter, the more his exasperation grew. The definition for duplicity is "deceptive thought, speech, or action.", the definition for advantageous is "Giving an advantage.", and the definition for revive is "To bring back to life."

The definition for pretense is "False intention or purpose." Used in a sentence: The jewel thief entered the mansion under the pretense of fixing a leaky faucet. The definition for prune is "to reduce by removing excess.", the definition for adversary is "One who opposes or resists.", and the definition for solace is "Source of consolation."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for obnoxious is "highly offensive.", the definition for inflammatory is "Tending to excite anger.", and the definition for naive is "Lacking worldy wisdom."

The definition for stifle is "To repress or discourage." Used in a sentence: Amy tried ineffectively to stifle her giggles after she read Susan's note in class. The definition for insolence is "boldness or rudeness.", the definition for defiant is "Showing bold resistance.", and the definition for euphoria is "Feeling of great happiness."