Supermajority rhymes with:
asperity, austerity, celebrity, charity, darity, dority, garity, garrity, gerety, gerrity, harrity, immaturity, inferiority, insecurity, insularity, seniority, severity, superiority, unpopularity, varity, vulgarity
asperity, austerity, celebrity, charity, darity, dority, garity, garrity, gerety, gerrity, harrity, immaturity, inferiority, insecurity, insularity, seniority, severity, superiority, unpopularity, varity, vulgarity