See amplify in Webster's New World Roget's A-Z Thesaurus II
verb
To make or become greater or larger:
aggrandize, augment, boost, build, build up, burgeon, enlarge, escalate, expand, extend, grow, increase, magnify, mount, multiply, proliferate, rise, run up, snowball, soar, swell, upsurge, wax. (Informal) beef up. See increaseTo express at greater length or in greater detail:
develop, dilate, elaborate, enlarge, expand, expatiate, labor. See explainTo increase markedly in level or intensity, especially of sound:
elevate, heighten, raise. See increase
Learn more about amplify