盲頭烏蠅 [－头乌蝇]

Jyutping maang4 tau4 wu1 jing4
Pinyin máng tóu wū yíng

Definitions (粵典–words.hk)
  1. 名詞
    蕩​失路​；​完全​唔​知點​行去​一個​地方
    to have no clue where to go; to be lost; literally "blind fly"
  2. 名詞
    事前​毫無計劃​，​只​係​靠​估同​撞​嚟​做​嘢
    to have no planning

盲頭烏蠅 [－头乌蝇]

Jyutping maang4 tau4 wu1 jing1
Pinyin máng tóu wū yíng

Definitions (CC-CANTO)
  1. (act like) a headless chicken
Definitions (粵典–words.hk)
  1. 名詞
    蕩​失路​；​完全​唔​知點​行去​一個​地方
    to have no clue where to go; to be lost; literally "blind fly"
  2. 名詞
    事前​毫無計劃​，​只​係​靠​估同​撞​嚟​做​嘢
    to have no planning