Or search: ash, hue, mix, barb, blur, boil, clot, cook, dope, edit, lace, lend, nick, pall, redo
4 Syllables: SUUU
authorizing, beautifying, certifying, clarifying, classifying, colonizing, edifying, glorifying, gratifying, horrifying, justifying, magnifying, notifying, purifying, qualifying, ratifying, rectifying, sanctifying, signifying, simplifying, specifying, terrifying, unifying, verifying, vivifying
5 Syllables: USUUU
apologizing, exemplifying, identifying

Found 28 words across 2 groupings.