Showing results for "territories" instead. (You can only search for 1 word at a time unless you use the Storm or Mosaic Rhyme tools)
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4 Syllables: SUUU
ceremonies, dormitories, laboratories, preparatory, signatories
5 Syllables: USUUU
declaratory, repositories
6 Syllables: UUSUUU
interrogatories

Found 8 words across 3 groupings.