Or search: tame, beast, brute, fauna, modify, reclaim, creature, domesticate, domesticize
3 Syllables: SUU
clarifies, mechanized, memorize, paradigms, paralyze, specialised, specialize, specified, specifies, specify, sterilized
4 Syllables: USUU
unspecified

Found 12 words across 2 groupings. Skipped 3 excess words of a similar stem.