2 Syllables: SU
beetle, Cecil, diesel, eagle, easel, equal, equalled, equals, evil, feeble, fetal, genial, legal, lethal, measles, medial, menial, needful, needle, peaceful, penal, people, regal, renal, sequel, siecle, steeple, venal, venial, weasel
3 Syllables: USU
adrenal, coeval, congenial, enfeebled, illegal, medieval, primeval, remedial, retrieval, unequal, unequalled, upheaval
4 Syllables: UUSU
Found 44 words across 3 groupings. Skipped 11 excess words of a similar stem.