Or search: dilate, evolve, expand, modify, enlarge, expound, exposit, speciate, expatiate, specialise, particularise, particularize
3 Syllables: SUU
clarifies, mechanized, memorize, paradigms, paralyze, specialised, specialized, specifies, sterilized

Found 9 words across 1 groupings. Skipped 2 excess words of a similar stem.