Or search: analyze, analyse, psychiatry, psychoanalyse, psychopathology
3 Syllables: SUU
agonized, analyse, analyze, Apennines, candlelight, canonized, classifies, dramatize, naturalized, patronize, scandalized
4 Syllables: USUU
antagonize

Found 12 words across 2 groupings. Skipped 3 excess words of a similar stem.