Or search: liquid, molten, thawed, fusible, unfrozen, dissolved, liquefied, liquified
2 Syllables: SU
belted, Celtic, Eliot, Eliot's, Elliot, Elliott, helmet, pellets, pelted, pelvic, prelate, relic, velvet, welcomed, welded, zealots
3 Syllables: USU
angelic, appellate, develop, develope, develops, envelop
4 Syllables: UUSU
undeveloped
5 Syllables: UUUSU
underdeveloped

Found 24 words across 4 groupings. Skipped 6 excess words of a similar stem.