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Jyutping mou4 laa1 laa1
Pinyin wú la la

Definitions (粵典–words.hk)
  1. 副詞
    喺​冇​原因​之下​突然​發生​;​無緣​無故​;​唔​知點解
    all of a sudden; for no reason
    • 無啦啦多笪疤
      无啦啦多笪疤
      mou4 laa1 laa1 do1 daat3 naa1
      said to show one have bad luck
    • 阿松頭先無𠸎𠸎發爛渣。
      阿松头先无𠸎𠸎发烂渣。
      aa3 cung4 tau4 sin1 mou4 laa1 laa1 faat3 laan6 zaa2.
      A-chung just threw a tantrum for no apparent reason.
  2. 近義詞
    失驚無神、無情情、無無端端、無端白事、無端端
  3. 參看
    無𠸎𠸎
Definitions (Wiktionary)
  1. adv, Cantonese
    out of the blue; without warning; out of nowhere; for no reason
    (syn.) 無緣無故, 無端白事, 无端白事, 无情白事, 无情情, 無情情, 无端, 無情白事, 无端端, 無端, 無端端, 无缘无故

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Jyutping mou4 laa1 laa1
Pinyin wú lá lá

Definitions (CC-CANTO)
  1. (adverb) unreasonably; suddenly; unexpectedly
Examples (Tatoeba—Cantonese-English)
  1. Cantonese
    吓死人咩!无啦啦喺后面弹出嚟!
    嚇死人咩!無啦啦喺後面彈出嚟!
    haak3 sei2 jan4 me1 ! mou4 laa1 laa1 hai2 hau6 min6 daan2 ceot1 lai4 !
    • You scared me! Don't sneak upon me from behind!
  2. Cantonese
    有时会无啦啦好想食朱古力。
    有時會無啦啦好想食朱古力。
    jau5 si4 wui2 mou4 laa1 laa1 hou3 soeng2 sik6 zyu1 gu1 lik1 。
    • Sometimes you just want to eat chocolate.
Examples (粵典–words.hk)
  1. Cantonese
    唔好再成日无啦啦弹出嚟,会吓亲人㗎。
    唔好再成日無啦啦彈出嚟,會嚇親人㗎。
    m4 hou2 zoi3 sing4 jat6 mou4 laa1 laa1 daan6 ceot1 lai4, wui5 haak3 can1 jan4 gaa3.
    • Stop popping up! You will scare others.
  2. Cantonese
    无啦啦打人,你都神经嘅!
    無啦啦打人,你都神經嘅!
    mou4 laa1 laa1 daa2 jan4, nei5 dou1 san4 ging1 ge3!
    • You must be insane to beat up others for no reason!
  3. Cantonese
    一提起屋企人佢就无啦啦崩堤。
    一提起屋企人佢就無啦啦崩堤。
    jat1 tai4 hei2 uk1 kei5 jan4 keoi5 zau6 mou4 laa1 laa1 bang1 tai4.
    • She had a mental collapse once she brought up her family.
  4. Cantonese
    佢无啦啦晕咗。
    佢無啦啦暈咗。
    keoi5 mou4 laa1 laa1 wan4 zo2.
    • He suddenly lost consciousness.
  5. Cantonese
    无啦啦叫我借十皮比佢,佢都忽忽地嘅!
    無啦啦叫我借十皮比佢,佢都忽忽地嘅!
    mou4 laa1 laa1 giu3 ngo5 ze3 sap6 pei4 bei2 keoi5, keoi5 dou1 fat1 fat1 dei2!
    • He's gone mad! He all of a sudden asked me to lend him a hundred thousand dollars.