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 prudent is "marked by wisdom, shrewd.", the definition for ethical is "Conforming to accepted standards.", and the definition for benevolent is "Kind, helpful."

The definition for foil is "One that enhances or underscores by contrast." Used in a sentence: The sweet cookie was a perfect foil to the sour lemon sorbet. The definition for polarize is "to break up into opposing groups.", the definition for retroactive is "effective as of a prior time or condition.", and the definition for onset is "Beginning."

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 mundane is "practical, ordinary.", the definition for exasperation is "The state of being irritated.", and the definition for gravity is "Importance, significance."

The definition for recrimination is "A retaliatory accusation." Used in a sentence: Frank, who was wounded by Sally's remark, made a bitter recrimination. The definition for ramble is "to wander, physically or in language.", the definition for deferment is "The act of delaying.", and the definition for flagrant is "Noticeably offensive."

The definition for flagrant is "Noticeably offensive." Used in a sentence: The executive was fired for his flagrant abuse of the company expense account. The definition for mandate is "an official order or commission to do something.", the definition for prune is "To reduce by removing excess.", and the definition for entangle is "To involve in trouble."