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 prudent is "marked by wisdom, shrewd.", the definition for comparable is "Similar, equivalent.", and the definition for authoritarian is "Favoring absolute obedience to authority."

The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for raucous is "noisy, rowdy.", the definition for fidelity is "State of being faithful.", and the definition for awe is "Emotion combining dread and wonder."

The definition for revoke is "To cancel by taking back." Used in a sentence: After Kal's father revoked his allowance, he had no money for the movies. The definition for fickle is "lacking constancy, changeable.", the definition for melee is "A tumultuous fight among several people.", and the definition for brandish is "To shake or wave menacingly."

The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for penurious is "extrememly stingy.", the definition for mundane is "Practical, ordinary.", and the definition for elusive is "Hard to grasp."

The definition for placebo is "An inactive substance used in medical testing." Used in a sentence: Tom, who had taken the placebo, found that his allergy symptoms did not go away. The definition for opportune is "suitable or convenient.", the definition for egotist is "Self–important person.", and the definition for exasperation is "The state of being irritated."