Overreact rhymes with:
react, react, abstract, act, attacked, attract, backed, blacked, bracht, counterattacked, cracked, detract, diffract, distract, enact, exact, extract, fact, hacked, impact, inexact, intact, interact, jacked, kracht, lacked, medfact, packed, pact, pracht, protract, racked, react, redact, reenact, repacked, retract, sacked, schacht, slacked, smacked, snacked, stacked, subtract, tacked, tact, tracht, tracked, tract, transact, unpacked, whacked, wracked
Overreact sounds like:
o'brecht, oberst, obrecht, oppressed, overact, overacted, overcast, overcoat, overcooked, overexcite, overexcited, overjoyed, overreached, overreacted, overshadow, overshadowed, overshoot, overshot, oversight, oversized, overstate, overstated, overstay, overstayed, overused, overweight, overweighted, overworked, overwrought