The definition for iridescent is "Having a lustrous or attractivve quality." Used in a sentence: The movie star's iridescent presence charmed even the hardened reporter. The definition for corrosive is "bitingly sarcastic.", the definition for ploy is "A contrived plan.", and the definition for moderate is "Tending toward the average."

The definition for inflammatory is "Tending to excite anger." Used in a sentence: Garth's inflammatory remarks at the party made Gwen furious. The definition for inauspicious is "not favorable.", the definition for benefactor is "One who offers financial help.", and the definition for revive is "To bring back to life."

The definition for beneficial is "Helpful." Used in a sentence: there is no doubt that eating vegetables is beneficial to one's health. The definition for turmoil is "extreme confusion, agitation.", the definition for beneficial is "Helpful.", and the definition for deferment is "The act of delaying."

The definition for diffident is "Lacking self–confidence." Used in a sentence: The diffident student never raised her hand in class, even when she knew the answer. The definition for refurbish is "to brighten or freshen.", the definition for futile is "Without purpose, completely ineffective.", and the definition for interminable is "Never ending, or seemingly endless."

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 iridescent is "having a lustrous or attractivve quality.", the definition for garish is "Offensively bright.", and the definition for extenuating is "Partially excusing."