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 beneficial is "helpful.", the definition for ecstatic is "Overwhelmingly emotional.", and the definition for negate is "To make invalid."

The definition for revoke is "To cancel by taking back." Used in a sentence: After Kal's father revoked his allowance, he had no money for the movies. The definition for opportune is "suitable or convenient.", the definition for diffident is "Lacking self–confidence.", and the definition for avian is "Relating to birds."

The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for salvage is "to save from ruin.", the definition for euphoria is "Feeling of great happiness.", and the definition for corrosive is "Bitingly sarcastic."

The definition for pathos is "Sympathetic pity." Used in a sentence: The soldiers cherished the kindly Nurse Nightingale for her pathos. The definition for onset is "beginning.", the definition for buffoonery is "Foolish behavior.", and the definition for flourish is "To make bold, sweeping gestures."

The definition for accessible is "Easy to reach or to approach." Used in a sentence: The introduction to the complex novel was, thankfully, written in clear accessible language. The definition for gruff is "rough or stern in manner or speech.", the definition for recrimination is "A retaliatory accusation.", and the definition for revoke is "To cancel by taking back."