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 extol is "to praise highly.", the definition for apathetic is "Showing little or no emotion.", and the definition for ecstatic is "Overwhelmingly emotional."

The definition for comparable is "Similar, equivalent." Used in a sentence: Helen will only accept something of comparable value for her ticket to the concert. The definition for stealth is "the act of moving secretly or unnoticed.", the definition for benevolent is "Kind, helpful.", and the definition for buffer is "Protective barrier."

The definition for combustion is "Act of burning." Used in a sentence: Campers must use fire with great caution to prevent combustion of the parched brush. The definition for beneficial is "helpful.", the definition for duplicity is "Deceptive thought, speech, or action.", and the definition for derelict is "Abandoned."

The definition for exasperation is "The state of being irritated." Used in a sentence: The longer Jorge waited in line at the ticket counter, the more his exasperation grew. The definition for salvage is "to save from ruin.", the definition for combustion is "Act of burning.", and the definition for illuminate is "To make clear."

The definition for benefactor is "One who offers financial help." Used in a sentence: Michael's aunt and benefactor paid his college tuition. The definition for curtail is "to make less.", the definition for camaraderie is "Spirit of friendship.", and the definition for embellish is "To decorate."