Wrenching rhymes with:
drenching, entrenching, retrenching, drenching, entrenching, quenching, retrenching, branching, bunching, clinching, crunching, drenching, entrenching, flinching, inching, launching, lunching, lynching, munching, pinching, punching, quenching, ranching, retrenching, stanching, unflinching