Or search: sow, diffuse, podcast, disperse, broadcast, circulate, propagate, generalize, popularize, generalise, popularise, circularize, circularise
4 Syllables: SUUU
culminated, decorated, dedicated, delegated, demonstrated, deprecated, devastated, dominated, estimated, fascinated, generated, laminated, legislated, nominated, penetrated, separated, terminated
5 Syllables: USUUU
assassinated, contaminated, discriminated, domesticated, eliminated, illuminated, investigated, necessitated, originated
6 Syllables: UUSUUU
uncontaminated

Found 27 words across 3 groupings.