The definition for retroactive is "effective as of a prior time or condition." Used in a sentence: The retroactive law made even past infractions punishable. The definition for fragile is "delicate.", the definition for stifle is "To repress or discourage.", and the definition for buffer is "Protective barrier."

The definition for negate is "To make invalid." Used in a sentence: Paula negated Tiffany's argument by proving that her main premise was false. The definition for scapegoat is "someone who bears the blame for others.", the definition for apathetic is "Showing little or no emotion.", and the definition for exalt is "To elevate by praise."

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 refurbish is "to brighten or freshen.", the definition for genial is "Sympathetic, friendly.", and the definition for clarity is "Clearness."

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 ecstatic is "overwhelmingly emotional.", the definition for epitaph is "Brief statement honoring a dead person.", and the definition for rhapsody is "State of great happiness."

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 procrastinate is "to put off intentionally.", the definition for camaraderie is "Spirit of friendship.", and the definition for obnoxious is "Highly offensive."