Or search: math, infer, logic, maths, cipher, cypher, deduce, deduct, derive, reckon, compute, generalize, generalise, interpolate, mathematics
3 Syllables: SUU
abrogate, acetate, Adelaide, adequate, aggravate, aggregate, agitate, allocate, animate, fabricate, fascinate, graduate, magistrate, navigate, Rabelais, rattlesnake, saturate, validate
3 Syllables: USU
elaborate
4 Syllables: USUU
assassinate, collaborate, congratulate, contaminate, elaborates, eradicate, evaporate, exaggerate, exasperate, inadequate, Palatinate

Found 30 words across 3 groupings. Skipped 6 excess words of a similar stem.