3 Syllables: SUU
bigotry, dignities, dignity, fitfully, rickety, victory, wistfully
4 Syllables: USUU
acidity, antipodes, antiquities, antiquity, deliberately, fluidity, humidity, indignities, indignity, morbidity, rapidity, rigidity, solidity, timidity
5 Syllables: UUSUU
contradictory

Found 22 words across 3 groupings.