The definition for preclude is "To rule out in advance." Used in a sentence: "Having cake now will preclude dessert later," said Amber's mother. The definition for retroactive is "effective as of a prior time or condition.", the definition for mediate is "To come between parties in order to reconcile.", and the definition for naive is "Lacking worldy wisdom."

The definition for corrective is "Intended to correct." Used in a sentence: The school decided to take corrective measures to prevent truancy. The definition for extant is "currently existing.", the definition for opportune is "Suitable or convenient.", and the definition for procrastinate is "To put off intentionally."

The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for fidelity is "state of being faithful.", the definition for precept is "A general rule of action.", and the definition for stern is "Harsh, severe."

The definition for flourish is "To make bold, sweeping gestures." Used in a sentence: The fairy godmother flourished her wand and turned the pumpkin into a carriage. The definition for elate is "to fill with joy.", the definition for pathos is "Sympathetic pity.", and the definition for polarize is "To break up into opposing groups."

The definition for servile is "Fearfully submissive." Used in a sentence: Felicia's servile attitude annoyed her boss, who preferred an assistant with more backbone. The definition for ecstatic is "overwhelmingly emotional.", the definition for authoritarian is "Favoring absolute obedience to authority.", and the definition for extenuating is "Partially excusing."