Or search: slayer, suttee, seppuku, harakiri, harikari
3 Syllables: SUU
beautified, beautify, crucified, crucify, neutralized, scrutinized, stupefied, suicides, unified, unify, utilised, utilized
4 Syllables: USUU
computerized
5 Syllables: UUSUU
revolutionized

Found 14 words across 3 groupings.