Or search: grade, stamp, assign, assort, catalog, isolate, unitise, relegate, restrict, catalogue, categorize, categorise, dichotomise, dichotomize
4 Syllables: SUUU
agonizing, analyzing, beautifying, certifying, clarifying, edifying, glorifying, gratifying, horrifying, justifying, magnifying, modifying, notifying, purifying, qualifying, ratifying, rectifying, sacrificing, sanctifying, signifying, simplifying, specifying, tantalizing, terrifying, unifying, verifying, vivifying
5 Syllables: USUUU
exemplifying, identifying

Found 29 words across 2 groupings.