Overstates rhymes with:
interstates, understates, allstate's, corestates, corestates', interstates, sunstates, understates, allstate's, corestates, corestates', facilitates, gravitates, hesitates, imitates, interstates, irritates, necessitates, permutates, potentates, rotates, sunstates, understates
Overstates sounds like:
overacts, overcoats, overexcites, overreacts, overshadows, overstock