2 Syllables: SU
actions, actress, adage, aptness, Atlas, axioms, axis, badness, baptised, Baptist, blackest, blackness, cabbage, cactus, captains, captious, factions, factious, flatness, fractions, gladness, gratis, habeas, hapless, happiest, Jackson's, lapis, lattice, madness, Madras, Magnus, mattress, maxims, package, Sabbath, saddest, sadness, Saxons, slackness, status, taxes
3 Syllables: USU
abstractions, attractions, compactness, contractions, distractions, exactions, exactness, infractions, reactions, transactions
4 Syllables: UUSU
Found 55 words across 3 groupings. Skipped 3 excess words of a similar stem.