Synonyms and related words :
add to, aggrandize, amplify, augment, bag, balloon, belly, belly out, bilge, billow, bloat, blow up, bouge, broaden, bug, build, build up, bulge, bulk, bulk out, crescendo, develop, dilate, enlarge, expand, extend, fill out, goggle, greaten, hike, hike up, huff, increase, inflate, lengthen, magnify, pooch, pop, pouch, pout, puff, puff up, pump, pump up, raise, rarefy, round out, snowball, stretch, sufflate, swell, swell out, tumefy, up, widen