Толковый словарь английского языка - heighten

verb (~ed; ~ing) Date: 1523 transitive verb 1. to increase the amount or degree of ; augment, to make brighter or more intense ; deepen, to bring out more strongly ; point up, to make more acute ; sharpen, 2. to raise high or higher ; elevate, to raise above the ordinary or trite, elate, intransitive verb grow, rise, 2. to become great or greater in amount, degree, or extent, to become brighter or more intense