Or search: lump, bloat, swell, distend, tumesce, swelling, intumesce
2 Syllables: SU
boasted, bolted, coated, coded, conic, floated, folded, goaded, homesick, jolted, loaded, molded, moulded, noted, posted, prolix, quoted, roasted, scolded, Stoic, toasted, voted, wonted
3 Syllables: USU
corroded, devoted, eroded, exploded, heroic, inchoate, outmoded, revolted, unloaded, unwonted

Found 33 words across 2 groupings. Skipped 1 excess word of a similar stem.