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Jyutping lou5 ngoi2
Pinyin lǎo wài

Definitions (粵典–words.hk)
  1. 名詞、台灣、大陸
    外國人
    foreigner; literally: old outside

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Jyutping lou5 ngoi6
Pinyin lǎo wài

Definitions (CC-CEDICT)
  1. (coll.) foreigner (esp. non Asian person)
  2. layman
  3. amateur
Definitions (Wiktionary)
  1. noun, Cantonese
    father-in-law (wife's father)
  2. noun, informal
    layman; amateur (Classifier: 個/个 m)
  3. noun, colloquial, derogatory, humorous, offensive, possibly, sometimes
    foreigner, particularly a white Westerner (Classifier: 個/个 m)
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    幸运的是大家都明白了这个老外的意思,知道我只是闹笑话而友好地对我笑一下。
    幸運的是大家都明白了這個老外的意思,知道我只是鬧笑話而友好地對我笑一下。
    xìng yùn de shì dà jiā dōu míng bái le zhè ge lǎo wài de yì si , zhī dào wǒ zhǐ shì nào xiào hua ér yǒu hǎo dì duì wǒ xiào yī xià 。
    • Fortunately, everybody understood what this foreigner meant, knew I was only making a fool of myself, and laughed at me.
  2. Mandarin
    他是老外,他听不懂我们说的话。
    他是老外,他聽不懂我們説的話。
    tā shì lǎo wài , tā tīng bu dǒng wǒ men shuō de huà 。
    • He's a foreigner. He doesn't understand what we're saying.
Examples (Wiktionary)
  1. Mandarin
    老外
    老外
    lǎo wài
    • foreigner; (pejorative) layman, one who lacks knowledge of a subject