1 Syllable: S
buyer, choir, crier, dire, drier, Dyer, fire, friar, hier, higher, hire, ire, iron, liar, lyre, Meyer, mire, Myers, prior, pyre, quire, shire, sire, spire, squire, tire, Tyre, wired, wires
2 Syllables: SU
binder, brighter, childbirth, cider, cipher, climber, diver, driver, either, fiber, fibre, fighter, finder, finer, grinder, heifer, hyper, iceberg, idler, Kaiser, kinder, Liber, libre, lighter, liner, livelier, mightier, milder, miner, minor, miser, mitre, neither, nicer, Niger, Piper, primer, rider, riper, Schneider, Schuyler, Signer, slighter, Snyder, spider, Steiner, strikers, Tiber, tiger, tighter, timer, Tyler, viper, whiter, wider, Wiener, wilder, wiser, writer
2 Syllables: US
acquire, admire, afire, aspire, attire, conspire, desire, enquire, entire, expire, inquire, inspire, require, retire, supplier, transpired
3 Syllables: USU
admirer, adviser, advisor, compiler, decipher, designer, diviner, Enquirer, inquirer, outsider, provider, reminder, subscriber, survivor
3 Syllables: UUS
4 Syllables: UUSU
Found 120 words across 6 groupings. Skipped 71 excess words of a similar stem.