ˋㄗㄨㄛˋㄓㄨˇㄓㄤzìzuòzhǔzhāng

自作主张
  1. 沒有經過批准協商擅自處置 全局不宜自作主張」、自作主張房子」。

to think for oneself and act accordingly (idiom)​; to act on one's own initiative