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Jyutping maan4 waang6 mou4 lei5
Pinyin mán hèng wú lǐ

Definitions (CC-CEDICT)
  1. rude and unreasonable
Definitions (Wiktionary)
  1. phrase, idiomatic
    rude and unreasonable
    (syn.) 横蛮无理, 橫蠻無理
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    蛮横无理
    蠻橫無理
    maan4 waang4 mou4 lei5
    • rude and unreasonable; impervious to reason