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 impenitent is "lacking remorse.", the definition for inviolable is "Secure from assault of trespass.", and the definition for moderate is "Tending toward the average."

The definition for revive is "To bring back to life." Used in a sentence: Hank tried to revive Clare's interest in the project, but her enthusiasm had expired. The definition for incongruous is "not harmonious, incompatible.", the definition for grandiose is "With an affectation of grandeur.", and the definition for foil is "One that enhances or underscores by contrast."

The definition for gravity is "Importance, significance." Used in a sentence: Understanding the gravity of his error, Ken offered his humblest apology. The definition for beneficial is "helpful.", the definition for diffident is "Lacking self–confidence.", and the definition for rehash is "To discuss again."

The definition for pretense is "False intention or purpose." Used in a sentence: The jewel thief entered the mansion under the pretense of fixing a leaky faucet. The definition for derivative is "lacking originality.", the definition for cunning is "Showing clever insight.", and the definition for illuminate is "To make clear."

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 advantageous is "giving an advantage.", the definition for facade is "false or superficial appearance.", and the definition for finite is "Having definite limits."