To carry forward; to advance; to increase; to augment; to aggravate; to intensify; to render more conspicuous; -- used of things, good or bad; as, to heighten beauty; to heighten a flavor or a tint.

increase the height of; "The athletes kept jumping over the steadily heightened bars"

make more intense, stronger, or more marked; "The efforts were intensified", "Her rudeness intensified his dislike for her"; "Potsmokers claim it heightens their awareness"; "This event only deepened my convictions"

become more extreme; "The tension heightened"

increase; "This will enhance your enjoyment"; "heighten the tension"

make (one's senses) more acute; "This drug will sharpen your vision"

To make high; to raise higher; to elevate.

make more extreme; raise in quantity, degree, or intensity; "heightened interest"

The opposite of shading. Raising the value of an area with white or a pale color.