馬失前蹄 [马－－－]

Jyutping maa5 sat1 cin4 tai4
Pinyin mǎ shī qián tí

Definitions (CC-CEDICT)
  1. lit. the horse loses its front hooves
  2. fig. sudden failure through miscalculation or inattentiveness
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    to suddenly fail through miscalculation or inattentiveness
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）