Disloyalty rhymes with:
loyalty, loyalty, royalty, admiralty, casualty, difficulty, faculty, fealty, loyalty, mayoralty, mcanulty, novelty, penalty, realty, royalty, specialty, subtlety, tumulty
Disloyalty sounds like:
dassault, dazzled, deslatte, desolate, disallowed, docility, dugald, dussault, dusseault