Showing results for "radical" instead. (You can only search for 1 word at a time unless you use the Storm or Mosaic Rhyme tools)
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3 Syllables: SUU
capital, Capitol, classical, graphical, Hannibal, magical, practical, radicals, tactical, tragical
4 Syllables: USUU
botanical, dynamical, fanatical, fantastical, grammatical, impractical, irascible, mechanical, theatrical, tyrannical
5 Syllables: UUSUU
biographical, enigmatical, geographical, mathematical, piratical, problematical, puritanical, topographical, typographical
6 Syllables: UUUSUU
ecclesiastical
7 Syllables: UUUUSUU
autobiographical

Found 31 words across 5 groupings. Skipped 2 excess words of a similar stem.