Or search: mull, muse, guess, commit, hazard, invest, ponder, puzzle, pretend, retrace, bethink, meditate, ruminate, theorize, theorise
3 Syllables: SUU
violated
4 Syllables: SUUU
calculated, circulated, correlated, desolated, emulated, excavated, extirpated, extricated, formulated, granulated, insulated, isolated, mutilated, populated, postulated, regulated, simulated, stimulated, stipulated, tabulated
4 Syllables: USUU
annihilated
5 Syllables: USUUU
accumulated, articulated, assimilated, capitulated, coagulated, congratulated, depopulated, expostulated, inoculated, interpolated, manipulated, unregulated
6 Syllables: UUSUUU
recapitulated

Found 35 words across 5 groupings.