The definition for buffer is "Protective barrier." Used in a sentence: The dense trees acted as a buffer against the heavy rain. The definition for preclude is "to rule out in advance.", the definition for abate is "Become less in amount or intensity.", and the definition for authoritarian is "Favoring absolute obedience to authority."

The definition for perception is "Capacity for seeing or understanding." Used in a sentence: His incredible perception made him the best detective on the force. The definition for negate is "to make invalid.", the definition for incisive is "Impressively direct and decisive.", and the definition for revive is "To bring back to life."

The definition for pretentious is "Making unjustified claims." Used in a sentence: The pretentious boy said that he was the fastest runner, but he finished last in the race. The definition for incisive is "impressively direct and decisive.", the definition for epitaph is "Brief statement honoring a dead person.", and the definition for ramble is "To wander, physically or in language."

The definition for adversary is "One who opposes or resists." Used in a sentence: Franklin hoped to defeat his adversary in the afternoon's tennis match. The definition for garish is "offensively bright.", the definition for melodious is "Having a pleasing melody.", and the definition for mandate is "An official order or commission to do something."

The definition for discern is "To recognize as separate as distinct." Used in a sentence: The pastry connoisseur was able to discern Swiss from Belgian chocolate. The definition for obnoxious is "highly offensive.", the definition for garish is "Offensively bright.", and the definition for impenitent is "Lacking remorse."