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Jyutping lou4 hei3
Pinyin láo qì

Definitions (CC-CANTO)
  1. (adjective) angry; annoyed; irritated; fuming; to describe something where one needs to expend a great deal of effort to go through a lot of trouble and is very mentally exhaustive
Definitions (粵典–words.hk)
  1. 形容詞
    激氣​,​令人​發​嬲
    agitating
    • 佢好鬼寸嘴,所以同佢講嘢鬼死咁勞氣。
      佢好鬼寸嘴,所以同佢讲嘢鬼死咁劳气。
      He is most arrogant, so talking with him is most agitating and irritating.
  2. 形容詞
    脾氣​差​,​容易​發火
    ill-tempered
    • 佢份人好鬼勞氣,三句唔埋兩句就鬧人。
      佢份人好鬼劳气,三句唔埋两句就闹人。
      He is ill-tempered, often scolding others.
Definitions (Wiktionary)
  1. adj, Cantonese
    angry; annoyed
    • 小小事啫,唔使咁劳气。
      小小事啫,唔使咁劳气。
      siu2 siu2 si6 ze1, m4 sai2 gam3 lou4 hei3.
      It's just a trivial matter, no need to be so annoyed [by it].
Definitions (Kaifangcidian)
  1. 動怒 – 动怒
  2. 生氣 – 生气
  3. 動氣 – 动气
  4. 發火 – 发火
  5. 氣惱 – 气恼
  6. 費話 – 费话
  7. 費神 – 费神
  8. 勞神 – 劳神
  9. 費口舌 – 费口舌
  10. 費脣舌 – 费唇舌
  11. 多說話 – 多说话
  12. 白費脣舌 – 白费唇舌
Examples (粵典–words.hk)
  1. Cantonese
    佢成日做错嘢,令人十分之劳气。
    佢成日做錯嘢,令人十分之勞氣。
    keoi5 seng4 jat6 zou6 co3 je5, ling6 jan4 sap6 fan1 zi1 lou4 hei3
    • He's constantly messing up, which drives people crazy.
  2. Cantonese
    佢摆到明系玩胶㖞,你咪咁劳气啦!
    佢擺到明係玩膠喎,你咪咁勞氣啦!
    keoi5 baai2 dou3 ming4 hai6 waan2 gaau1 wo3, nei5 mai5 gam3 lou4 hei3 laa1!
    • He just pretends to be dumb. Save your breath.
  3. Cantonese
    佢好鬼寸嘴,所以同佢讲嘢鬼死咁劳气。
    佢好鬼寸嘴,所以同佢講嘢鬼死咁勞氣。
    • He is most arrogant, so talking with him is most agitating and irritating.
  4. Cantonese
    佢份人好鬼劳气,三句唔埋两句就闹人。
    佢份人好鬼勞氣,三句唔埋兩句就鬧人。
    • He is ill-tempered, often scolding others.