Or search: randomly, arbitrarily, haphazardly, promiscuously
3 Syllables: SUU
literally, miserably
4 Syllables: SUUU
criminally, definitely, Fortunately, infinitely, liberally, literacy, obstinately, passionately, rigorously, vigorously
4 Syllables: USUU
conditionally, deliberately, originally, provisionally, traditionally
5 Syllables: USUUU
Additionally, affectionately, considerably, dispassionately, episcopacy, illiteracy, indefinitely, inordinately, legitimacy, legitimately, proportionately, reciprocally, unfortunately
5 Syllables: UUSUU
unconditionally, unequivocally
6 Syllables: UUSUUU
disproportionately, illegitimacy, superficiality

Found 35 words across 6 groupings.