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 elusive is "hard to grasp.", the definition for turmoil is "Extreme confusion, agitation.", and the definition for pallid is "Lacking color."

The definition for garish is "Offensively bright." Used in a sentence: The garish wallpaper offended Jerome, who preferred subtle colors. The definition for exception is "a case to which the rule does not apply.", the definition for penurious is "Extrememly stingy.", and the definition for turmoil is "Extreme confusion, agitation."

The definition for illuminate is "To make clear." Used in a sentence: Her excellent lecture illuminated the complicated subject of nuclear physics. The definition for inflammatory is "tending to excite anger.", the definition for serenity is "Calmness.", and the definition for inviolable is "Secure from assault of trespass."

The definition for catastrophic is "Relating to extreme misfortune." Used in a sentence: The effects of the massive hurricane were catastrophic. The definition for fraud is "trick.", the definition for unscrupulous is "Lacking principles.", and the definition for retroactive is "effective as of a prior time or condition."

The definition for archaic is "Characteristic of an earlier time." Used in a sentence: In the world of high fashion, two–year–old shoes are considered positively archaic. The definition for abate is "become less in amount or intensity.", the definition for clarity is "Clearness.", and the definition for dubious is "Questionable."