Prosperity rhymes with:
disparity, disparity, parity, celerity, clarity, dexterity, disparity, familiarity, geraghty, hilarity, irregularity, parity, peculiarity, polarity, popularity, posterity, rarity, regularity, similarity, sincerity, solidarity, temerity, unfamiliarity, verity
Prosperity sounds like:
persevered, poor-spirited, pressboard, prospered