2 Syllables: SU
ablest, ages, aimless, alias, Amos, anus, aqueous, atheist, avis, bailiff, baseless, baseness, bases, basest, basis, blameless, blazes, braces, bravest, breakage, Buenos, cages, Caius, Cambridge, cases, changeless, chases, Danish, Davis, drainage, faces, faintest, faintness, faithless, famous, gauges, gayest, gazes, graceless, graces, gracious, grayish, greatest, greatness, greyish, heinous, James's, Janus, laces, lameness, lateness, latest, makeshift, maketh, manus, mayest, mazes, nameless, native, paces, pages, painless, paintings, paleness, Papist, phases, phrases, places, plainest, plaintiff, plaintive, praises, races, racist, radius, rages, raises, ranges, safest, sages, sameness, shameless, shapeless, slavish, spaces, spacious, stages, stainless, status, strangeness, strangest, taketh, tasteless, traces, vagueness, vases, wages, wastage, Weymouth
3 Syllables: USU
Andreas, arranges, audacious, capacious, contagious, courageous, creative, cutaneous, displaces, embraces, engages, evasive, exchanges, extraneous, fallacious, hiatus, Ignatius, loquacious, oasis, outrageous, persuasive, pervasive, rapacious, replaces, sagacious, spontaneous, tenacious, ungracious, vexatious, vivacious, voracious
4 Syllables: UUSU
advantageous, Athanasius, efficacious, Himalayas, instantaneous, miscellaneous, ostentatious, simultaneous, subcutaneous, subterraneous, vegetative
5 Syllables: UUUSU
Found 145 words across 4 groupings. Skipped 5 excess words of a similar stem.