Synonyms and related words :
bag, balloon, beetle, belly, belly out, bilge, billow, bouge, brood, bug, bulge, dilate, distend, frown, gloom, glower, goggle, grimace, grump, jut, knit the brow, long face, look black, look sullen, lour, lower, make a face, make a lip, make a moue, make a mouth, mop, mop and mow, mope, moue, mouth, mow, mug, overhang, pet, poke, pooch, pop, pouch, project, protrude, pull a face, rictus, round out, scowl, snarl, stand out, stick out, sulk, swell, swell out, wry face, wry mouth