Overweight rhymes with:
await, equate, iwate, kuwait, lightweight, wait, waite, waitt, wayt, weight, whate
Overweight sounds like:
o'brecht, oberst, obrecht, oppressed, overact, overacted, overcast, overcoat, overcooked, overexcite, overexcited, overjoyed, overreached, overreact, overreacted, overshadow, overshadowed, overshoot, overshot, oversight, oversized, overstate, overstated, overstay, overstayed, overused, overweighted, overworked, overwrought