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 iridescent is "having a lustrous or attractivve quality.", the definition for garish is "Offensively bright.", and the definition for unscrupulous is "Lacking principles."

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 extenuating is "partially excusing.", the definition for preclude is "To rule out in advance.", and the definition for heed is "To pay attention to."

The definition for foil is "One that enhances or underscores by contrast." Used in a sentence: The sweet cookie was a perfect foil to the sour lemon sorbet. The definition for inauspicious is "not favorable.", the definition for cunning is "Showing clever insight.", and the definition for aesthete is "Person having or affecting sensitivity to beauty."

The definition for redouble is "To make twice as great." Used in a sentence: As the sun began to set, Brittany redoubled her effort to find the necklace she had dropped in the field. The definition for awe is "emotion combining dread and wonder.", the definition for combustion is "Act of burning.", and the definition for penurious is "Extrememly stingy."

The definition for belated is "Past the normal or proper time." Used in a sentence: Even though I forgot his birthday, I hoe my father accepts my belated card. The definition for ramble is "to wander, physically or in language.", the definition for futile is "Without purpose, completely ineffective.", and the definition for fragile is "Delicate."