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 scamper is "to run quickly.", the definition for cunning is "Showing clever insight.", and the definition for abate is "Become less in amount or intensity."

The definition for regurgitate is "To pour out or throw back." Used in a sentence: The teacher wanted us to examine ideas rather than to regurgitate memorized facts. The definition for rancorous is "marked by deep ill–will.", the definition for pretentious is "Making unjustified claims.", and the definition for catastrophic is "Relating to extreme misfortune."

The definition for genial is "Sympathetic, friendly." Used in a sentence: The genial host warmly greeted his many guests. The definition for exasperation is "the state of being irritated.", the definition for mediate is "To come between parties in order to reconcile.", and the definition for precept is "A general rule of action."

The definition for appalling is "Inspiring dismay or disgust." Used in a sentence: Hector found his roommate's habit of leaving his dirty socks on the floor appalling. The definition for derivative is "lacking originality.", the definition for diffident is "Lacking self–confidence.", and the definition for buffer is "Protective barrier."

The definition for obnoxious is "Highly offensive." Used in a sentence: The manager asked the obnoxious diner to leave the restaurant. The definition for facade is "false or superficial appearance.", the definition for implausible is "Unbelievable.", and the definition for serenity is "Calmness."