Or search: bum, lazy, loaf, loll, slug, laze, unused, jobless, baseless, daydream, inactive, indolent, faineant, leisured, frivolous
1 Syllable: S
aisle, dial, Lisle, miles, rial, trial, vial
2 Syllables: SU
Bible, bridal, bridle, cycle, final, frightful, idol, libels, Michael, Michael's, Michel, mindful, primal, rifle, rightful, rival, sible, spinal, spiral, spiteful, stifle, tidal, title, tribal, trifle, vital
2 Syllables: US
denial
3 Syllables: USU
archetypal, arrival, delightful, disciple, entitle, recital, reprisal, revival, survival, unbridled, unmindful, unrivalled, vaginal
4 Syllables: UUSU
suicidal

Found 48 words across 5 groupings. Skipped 28 excess words of a similar stem.