[--]

Jyutping sat1 gai1 mou4 san4
Pinyin shī jī wú shén

Definitions (粵典–words.hk)
  1. 副詞
    突然​間​,​無​啦​啦
    unexpectedly; suddenly; out of the blue
    • 你失驚無神大叫一聲,想嚇死人咩?
      你失惊无神大叫一声,想吓死人咩?
      nei5 sat1 geng1 mou4 san4 daai6 giu3 jat1 seng1, soeng2 haak3 sei2 jan4 me)?
      You scared the hell outta me with that sudden scream.
    • 你做咩失驚無神問埋啲咁認真嘅問題嘅?
      你做咩失惊无神问埋啲咁认真嘅问题嘅?
      nei5 zou6 me1 sat1 geng1 mou4 san4 man6 maai4 di1 gam3 jing6 zan1 ge3 man6 tai4 ge2?
      Why did you ask such a serious question all of a sudden?
  2. 參看
    失驚無神
Definitions (Wiktionary)
  1. adv, Cantonese
    suddenly; unexpectedly; out of the blue
    (syn.) 驟然, 著陌生頭, 玄工, 一下子, 忽然間, 單下, 突然, 冷陌生頭, 倏忽, 著末生頭, 一下兒, 一下, 冒冷子, 冷不防, 猛然, 失雞無神, 辣末生頭, 乍猛地, 猝然, 虎拉巴兒, 著生頭裡, 陣時間, 冒猛子, 乍然, 乍麼實兒, 臨陣, 無張無持, 暴其然, 忽聲能, 陣間, 辣陌生頭, 辣末生裡, 冒猛地, 著陌生裡, 忽然, 雄險, 無張持, 雄雄, 突乎其然, 失驚忘神, 失驚無神, 突然之間, 乍乍地, 玄玄風, 驀地, 突然間, 忽然之間, 三不臨陣