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 derelict is "abandoned.", the definition for negate is "To make invalid.", and the definition for belated is "Past the normal or proper time."

The definition for serenity is "Calmness." Used in a sentence: The serenity of the glassy sea soothed the sailors after the big storm. The definition for scamper is "to run quickly.", the definition for lurid is "Causing horror, shocking.", and the definition for dubious is "Questionable."

The definition for raucous is "Noisy, rowdy." Used in a sentence: Serena, who preferred quiet conversation, left the rancous party. The definition for serenity is "calmness.", the definition for drub is "To defeat decisively.", and the definition for methodical is "Performed in an orderly manner."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for liability is "a person or thing whose presence or behavior is likely to cause embarrassment or put one at a disadvantage.", the definition for distortion is "The act of twisting out of shape.", and the definition for brandish is "To shake or wave menacingly."

The definition for incumbent is "Necessary as a duty or responsibility." Used in a sentence: It was incumbent on Jack to attend his father's retirement party. The definition for promote is "to contribute to the growth or prosperity of.", the definition for inviolable is "Secure from assault of trespass.", and the definition for fickle is "Lacking constancy, changeable."