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 cunning is "showing clever insight.", the definition for entangle is "To involve in trouble.", and the definition for meticulous is "Extrememly careful regarding details."

The definition for prominence is "Importance." Used in a sentence: The singer's prominence ensured that the concert would sell out. The definition for melodious is "having a pleasing melody.", the definition for futile is "Without purpose, completely ineffective.", and the definition for unscrupulous is "Lacking principles."

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 immoderate is "beyond usual or proper limits.", the definition for demean is "To lower status.", and the definition for garish is "Offensively bright."

The definition for benefactor is "One who offers financial help." Used in a sentence: Michael's aunt and benefactor paid his college tuition. The definition for mandate is "an official order or commission to do something.", the definition for derivative is "Lacking originality.", and the definition for scamper is "To run quickly."

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 unscrupulous is "lacking principles.", the definition for mediate is "To come between parties in order to reconcile.", and the definition for prudent is "Marked by wisdom, shrewd."