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 promote is "to contribute to the growth or prosperity of.", the definition for punctual is "On time.", and the definition for insolence is "Boldness or rudeness."

The definition for impenitent is "Lacking remorse." Used in a sentence: The impenitent criminal received a harsh penalty, but his remorseful accomplice was released. The definition for redouble is "to make twice as great.", the definition for corroborate is "To support with evidence.", and the definition for elusive is "Hard to grasp."

The definition for appalling is "Inspiring dismay or disgust." Used in a sentence: Hector found his roommate's habit of leaving his dirty socks on the floor appalling. The definition for commemorate is "to mark by a ceremony.", the definition for fickle is "Lacking constancy, changeable.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for flaw is "An imperfection." Used in a sentence: The otherwise perfect diamond had a tiny flaw that reduced its value. The definition for manifest is "obvious.", the definition for facade is "false or superficial appearance.", and the definition for insolence is "Boldness or rudeness."

The definition for deferment is "The act of delaying." Used in a sentence: Sybil was frustrated by the deferment of her much anticipated vacation. The definition for lenient is "mild or tolerant.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for condone is "To treat as acceptable."