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Jyutping zi6 soeng1 maau4 teon5
Pinyin zì xiāng máo dùn

Definitions (CC-CEDICT)
  1. to contradict oneself
  2. self-contradictory
  3. inconsistent
Definitions (粵典–words.hk)
  1. 形容詞
    指一個​人​嘅​言行​前​後​抵觸​。
    to be inconsistent; to contradict oneself.
    • 呢個小販話佢賣嘅矛最鋒利,又話佢嘅盾最堅硬,咁講唔係自相予盾咩!
      呢个小贩话佢卖嘅矛最锋利,又话佢嘅盾最坚硬,咁讲唔系自相予盾咩!
      ni1 go3 siu2 faan2 waa6 keoi5 maai6 ge3 maau4 zeoi3 fung1 lei6, jau6 waa6 keoi5 ge3 maau4 zeoi3 gin1 ngaang6, gam2 gong2 m4 hai6 zi6 soeng1 maau4 teon5 me1!
      This hawker says the lance that he's selling is the sharpest and his shield is the most rigid. Isn't he contradicting himself?
Definitions (Wiktionary)
  1. phrase, idiomatic
    self-contradictory; paradoxical; to contradict oneself
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #5567
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    举例说,如果一个老师警告学生不要吸烟,但自己却每天吸个不停,那么这个警告就是自相矛盾的了。
    舉例說,如果一個老師警告學生不要吸煙,但自己卻每天吸個不停,那麼這個警告就是自相矛盾的了。
    jǔ lì shuō , rú guǒ yí gè lǎo shī jǐng gào xué sheng bù yào xī yān , dàn zì jǐ què měi tiān xī gè bù tíng , nà me zhè ge jǐng gào jiù shì zì xiāng máo dùn de le 。
    • For example, if a chain-smoking teacher cautions a pupil for smoking, that warning is self-contradictory.
  2. Mandarin
    你在自相矛盾。
    你在自相矛盾。
    nǐ zài zì xiāng máo dùn 。
    • You're contradicting yourself.
Examples (粵典–words.hk)
  1. Cantonese
    辩方律师喺结案陈词指出控方证供自相矛盾,成功还被告一个清白。
    辯方律師喺結案陳詞指出控方證供自相矛盾,成功還被告一個清白。
    • The defendant's innocent was proved thanks for the defense lawyers pointed out the contradiction of plaintiff's evidence.