Among the currently most popular synonyms for boost are: stimulus, add to, breakthrough, amplify, increment, expansion, raise, enhance, rise, advance, boom, escalation, arouse, inspire, step up, further, heighten, inspiration, foster, upgrade, uplift, encourage, thrust, magnify, escalate, upsurge, upswing, hike, upturn, enlarge, augment, hoist, impetus, elevation, inflate, promote, facilitate, back, lift, encouragement, expand, shove, spurt, buttress, develop, addition, pick-me-up, bolster, nurture, spur, elevate, stimulate, augmentation, assist, growth, beef up, upheave, swell, push up, improvement, build up, strengthen, increase, jack up, aid, support, revitalize, fostering, fillip, invigorate, development, jump.