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 heed is "to pay attention to.", the definition for flagrant is "Noticeably offensive.", and the definition for avian is "Relating to birds."

The definition for extenuating is "Partially excusing." Used in a sentence: The extenuating circumstance of Calvin's illness caused the teacher to excuse his lateness. The definition for nurture is "to further the development of.", the definition for interminable is "Never ending, or seemingly endless.", and the definition for intricate is "Having complex and interrelated parts."

The definition for derelict is "Abandoned." Used in a sentence: The derelict house was condemned as a public hazard. The definition for foil is "one that enhances or underscores by contrast.", the definition for preclude is "To rule out in advance.", and the definition for duplicity is "Deceptive thought, speech, or action."

The definition for disdain is "Feeling of contempt." Used in a sentence: The arrogant writer did not hide his disdain for his uneducated dinner companion. The definition for plaudits is "enthusiastic approval.", the definition for absolve is "To forgive; to free from guilt.", and the definition for cunning is "Showing clever insight."

The definition for unscrupulous is "Lacking principles." Used in a sentence: The unscrupulous salesman was fired for lying to his customers. The definition for scamper is "to run quickly.", the definition for periodic is "Occurring at regular intervals.", and the definition for beneficial is "Helpful."