Or search: insult, affront
3 Syllables: SUU
bigotry, dignities, dignity, hideously, idiocy, rickety, signally
4 Syllables: USUU
acidity, antipodes, antiquities, antiquity, deliberately, fluidity, humidity, indignantly, indignities, insidiously, morbidity, predictably, rapidity, rigidity, solidity, timidity

Found 23 words across 2 groupings.