Or search: dung, enrich, modify, farming, stratify, pollinate, fertilise, pollenate
3 Syllables: SUU
realising, realizing
4 Syllables: SUUU
analyzing, certifying, civilizing, equalizing, generalizing, merchandising, mobilizing, moralizing, neutralizing, paralyzing, specializing, stabilizing, symbolizing, tantalizing, utilizing
5 Syllables: USUUU
demoralizing

Found 18 words across 3 groupings.