Or search: analytic, analytical, apodictic, arity, axiom, categorematic, completeness, computing, consistency, contradict, contradiction, corollary, deduce, deduct, derive
2 Syllables: SU
audit, broadest, caustic, chronic, colic, comic, conic, cosmic, fawcett, frolic, frosted, gothic, ovid, plaudits, polished, profit, psalmist, roderick, slavic, sonic, sonnet, sophist, tallest, tonic, topic, tropic, wafted
3 Syllables: USU
abolished, admonished, agnostic, aquatic, astonished, atomic, carbolic, carbonic, chaotic, demolished, deposit, despotic, erotic, exhausted, exotic, harmonic, hydraulic, hypnotic, impoverished, ionic, islamic, laconic, masonic, narcotic, neurotic, platonic, quixotic, sardonic, spasmodic, symbolic, teutonic, unpolished
4 Syllables: UUSU
alcoholic, apostolic, catastrophic, diagnostic, economic, electronic, embryonic, episodic, geologic, histrionic, idiotic, ironic, metabolic, microscopic, parabolic, patriotic, periodic, philanthropic, philosophic, physiologic
5 Syllables: UUUSU
antibiotics, napoleonic
7 Syllables: UUUUUSU
socioeconomic

Found 82 words across 5 groupings. Skipped 8 excess words of a similar stem.