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 euphoria is "feeling of great happiness.", the definition for exalt is "To elevate by praise.", and the definition for impenitent is "Lacking remorse."

The definition for cunning is "Showing clever insight." Used in a sentence: The general devised a cunning strategy to outfox the enemy. The definition for repel is "to resist, reject.", the definition for curtail is "To make less.", and the definition for awe is "Emotion combining dread and wonder."

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 benefactor is "one who offers financial help.", the definition for colossal is "Immense, enormous.", and the definition for placebo is "An inactive substance used in medical testing."

The definition for rancorous is "Marked by deep ill–will." Used in a sentence: The rancorous competition between the two chess clubs actually ended in a brawl. The definition for futile is "without purpose, completely ineffective.", the definition for drub is "To defeat decisively.", and the definition for manifest is "Obvious."

The definition for fraud is "Trick." Used in a sentence: The con man's fraud involved selling swampland to gullible investors. The definition for comprehensible is "understandable.", the definition for gravity is "Importance, significance.", and the definition for serenity is "Calmness."