Or search: secern, discern, isolate, redline, disfavor, insulate, segregate, disfavour, subtilize, secernate, severalise, severalize, disadvantage, differentiate, discriminating
4 Syllables: SUUU
alienated, culminated, dissipated, dominated, emanated, fascinated, illustrated, imitated, integrated, inundated, irrigated, irritated, laminated, liberated, mitigated, nominated, ordinated, terminated
5 Syllables: USUUU
anticipated, assassinated, assimilated, capitulated, contaminated, coordinated, debilitated, deliberated, denominated, disseminated, eliminated, exhilarated, exterminated, facilitated, illuminated, invigorated, obliterated, originated, participated, predominated, reciprocated, rehabilitated, reiterated, sophisticated, subordinated, unmitigated
6 Syllables: UUSUUU
recapitulated, unanticipated, uncontaminated

Found 47 words across 3 groupings.