Or search: uproariously
3 Syllables: SUU
carefully, courteously, curiously, furiously, gloriously, heresies, heresy, hideously, kerosene, obviously, previously, seriously, studiously, variously
4 Syllables: SUUU
anybody
4 Syllables: USUU
erroneously, harmoniously, imperiously, industriously, injuriously, insidiously, invariably, laboriously, luxuriously, mysteriously, notoriously, precariously, spontaneously, victoriously
5 Syllables: UUSUU
ignominiously, instantaneously, simultaneously
6 Syllables: UUUSUU
contemporaneously, unceremoniously

Found 34 words across 5 groupings.