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 facade is "false or superficial appearance.", the definition for ethical is "Conforming to accepted standards.", and the definition for iridescent is "Having a lustrous or attractivve quality."

The definition for inviolable is "Secure from assault of trespass." Used in a sentence: Situated on a mountain, with sixteen–foot walls, the castle was inviolable. The definition for flaw is "an imperfection.", the definition for raucous is "Noisy, rowdy.", and the definition for advantageous is "Giving an advantage."

The definition for demeanor is "Behavior towards others." Used in a sentence: Carlos was well liked because of his charming demeanor. The definition for flourish is "to make bold, sweeping gestures.", the definition for elusive is "Hard to grasp.", and the definition for eulogy is "Speech or writing in praise of deceased."

The definition for servile is "Fearfully submissive." Used in a sentence: Felicia's servile attitude annoyed her boss, who preferred an assistant with more backbone. The definition for authoritarian is "favoring absolute obedience to authority.", the definition for stifle is "To repress or discourage.", and the definition for cunning is "Showing clever insight."

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 nurture is "to further the development of.", the definition for periodic is "Occurring at regular intervals.", and the definition for repentant is "Feeling regret."