See augment in Webster's New World Roget's A-Z Thesaurus II
verb
To make or become greater or larger:
aggrandize, amplify, 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 increase
noun
The act of increasing or rising:
aggrandizement, amplification, augmentation, boost, buildup, enlargement, escalation, growth, hike, increase, jump, multiplication, proliferation, raise, rise, swell, upsurge, upswing, upturn. See increase
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