1 Syllable: S
2 Syllables: SU
beaver, beecher, breeder, briefer, caesar, cedar, cesar, cheaper, cleaner, clearer, creature, creeper, dealer, dearer, deeper, dreamer, eager, easier, easter, eastern, eastward, eater, either, emerge, ether, feature, feebler, feeders, fever, greener, healer, hearer, heater, keener, keeper, leader, leeward, leisure, lever, liter, livre, meager, meagre, meaner, meteor, meter, metre, mirror, nearer, neither, peter, pleader, preacher, reader, reaper, research, rigour, seaward, seeker, seizure, senior, sleeper, speaker, steamer, steeper, streamers, sweeter, teacher, weaker, weaver, wheeler, wiener
3 Syllables: USU
beleaguered, believer, besiegers, deceiver, demeanor, demeanour, northeastern, procedure, receiver, redeemer, saltpetre, southeastern
4 Syllables: UUSU
Found 91 words across 4 groupings. Skipped 49 excess words of a similar stem.