2 Syllables: SU
clearest, clinics, crickets, critics, digits, districts, finis, finish, Finnish, fixes, Ipswich, limits, lyrics, mixes, mystics, Philips, Phillips, Phyllis, physics, quickest, rickets, spirits, thickest, thinness, thinnest, tickets, visits, Willis
3 Syllables: USU
descriptive, diminish, eclipses, linguistics, predictive, prescriptive, resistless, restrictive, specifics, statistics, unfinished, vindictive
4 Syllables: UUSU
5 Syllables: UUUSU
Found 45 words across 4 groupings. Skipped 5 excess words of a similar stem.