expository: intended to explain or describe something.
composition: the way in which a whole or mixture is made up.
assuage: make (an unpleasant feeling) less intense.
decadence: moral or cultural decline as characterized by excessive indulgence in pleasure or luxury.
hackneyed: lacking significance through having been overused.
coalition: an alliance for combined action, esp. a temporary alliance of political parties forming a government or of states.
transcend: be or go beyond the range or limits of (something abstract, typically a conceptual field or division).
meritorious: deserving reward or praise.
lurid: very vivid in color, esp. so as to create an unpleasantly harsh or unnatural effect.
petulant: childishly sulky or bad-tempered.