脫韁之馬

Simplified: 脱缰之马

tuōjiāngzhīmǎ ㄊㄨㄛ ㄐㄧㄤ ㄓ ㄇㄚˇ

    • lit. a horse that has thrown off the reins (idiom) runaway horse
    • out of control

Character by character

Sources