The definition for periodic is "Occurring at regular intervals." Used in a sentence: The periodic innterruptions of the cuckoo clock prevented Li from concentrating. The definition for disdain is "feeling of contempt.", the definition for stern is "Harsh, severe.", and the definition for fragile is "Delicate."

The definition for insolence is "Boldness or rudeness." Used in a sentence: The boy's insolence to the policeman embarrassed his mother. The definition for futile is "without purpose, completely ineffective.", the definition for punctual is "On time.", and the definition for revive is "To bring back to life."

The definition for retroactive is "effective as of a prior time or condition." Used in a sentence: The retroactive law made even past infractions punishable. The definition for illuminate is "to make clear.", the definition for punctual is "On time.", and the definition for fragile is "Delicate."

The definition for appraise is "To evaluate the worth of." Used in a sentence: Simone, an expert in African sculpture, was asked to appraise the ambassador's collection of masks. The definition for euphoria is "feeling of great happiness.", the definition for penurious is "Extrememly stingy.", and the definition for antidote is "Something that relieves or counteracts."

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 rhapsody is "state of great happiness.", the definition for naive is "Lacking worldy wisdom.", and the definition for procrastinate is "To put off intentionally."