百密一疏 [－－－－]

Jyutping baak3 mat6 jat1 so1
Pinyin bǎi mì yī shū

Definitions (CC-CANTO)
  1. (idiom) someone is very detailed and meticulous but overlook on one tiny detail
Definitions (粵典–words.hk)
  1. 語句
    預計漏​咗​一樣​嘢​，​搞​到​計劃​前功​盡​廢
    to ruin a detailed plan because of a small oversight or miscalculation
    • 本身諗住詐病見工，點知百密一疏，搭車俾同事見到。
      本身谂住诈病见工，点知百密一疏，搭车俾同事见到。
      bun2 san1 nam2 zyu6 zaa3 beng6 gin3 gung1, dim2 zi1 baak3 mat6 jat1 so1, daap3 ce1 bei2 tung4 si6 gin3 dou2.
      I planned to pull a sickie for a job interview, but the plan was ruined just because I was seen by a colleague on public transport.
Examples (粵典–words.hk)
  1. Cantonese
    本身谂住诈病见工，点知百密一疏，搭车俾同事见到。
    本身諗住詐病見工，點知百密一疏，搭車俾同事見到。
    bun2 san1 nam2 zyu6 zaa3 beng6 gin3 gung1, dim2 zi1 baak3 mat6 jat1 so1, daap3 ce1 bei2 tung4 si6 gin3 dou2.
    • I planned to pull a sickie for a job interview, but the plan was ruined just because I was seen by a colleague on public transport.