swelly adjective 1noun 1forms 3 adjective1 •(informal) Tending to bulge or swell.He had a nasty face though, the boy considered, and looked like a bounder because he had pimples, a swelly nose, a loud voice, and a swanky manner. The boy disapproved of him wholly. — 1914 noun1 •(UK, historical) An abnormal local thickening of a seam of coal. formsswellies · more swelly · most swelly
