2 Syllables: SU
biggest, bigot, billet, biscuit, Bishop, civic, clearest, clinic, cricket, critic, cynic, dearest, digit, district, drifted, finished, fittest, frigate, frigid, gibbet, gifted, hillock, lifted, limit, listed, livid, lyric, millet, mimic, minute, minutest, mystic, mythic, nearest, Philip, Phillip, physic, picket, pivot, quickest, rhythmic, richest, rickets, rigid, rivet, shifted, sifted, spirit, syrup, thickest, thicket, thinnest, ticket, twisted, visit, vivid, wicket
3 Syllables: USU
Archbishop, artistic, assisted, consisted, deliberate, desisted, diminished, elicit, enlisted, exhibit, existed, explicit, idyllic, illicit, implicit, inhibit, initiates, insisted, linguistic, Pacific, persisted, prohibit, prolific, realistic, resisted, revisit, satiric, Semitic, severest, simplistic, sincerest, solicit, specific, statistic, stylistic, subsisted, terrific, unfinished
4 Syllables: UUSU
altruistic, analytic, atheistic, Calvinistic, catalytic, communistic, fatalistic, hieroglyphic, humanistic, idealistic, impolitic, journalistic, logarithmic, mechanistic, metaphysics, monolithic, nationalistic, naturalistic, optimistic, panegyric, paralytic, parasitic, pessimistic, rationalistic, scientific, socialistic, unassisted, undiminished, unrealistic
5 Syllables: UUUSU
6 Syllables: UUUUSU
7 Syllables: UUUUUSU
Found 135 words across 6 groupings. Skipped 39 excess words of a similar stem.