Pronunciation: (hīt'n),[key] —v.t. 1. to increase the height of; make higher.
2. to increase the degree or amount of; augment: Cézanne's death heightened the value of his paintings. 3. to strengthen, deepen, or intensify: to heighten the plot of a story; to heighten one's awareness or appreciation; to heighten one's suffering. 4. to bring out the important features of, as in a drawing: to heighten a picture withChinese white.
—v.i. 1. to become higher.
2. to increase: The tension heightened as the enemy forces advanced. 3. to brighten or become more intense.