The word(s) "contentious" appears 3 time(s) in 3 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) There is the type of man whose speech about this world's life May dazzle thee, and he calls Allah to witness about what is in his heart; yet is he the most contentious of enemies.

(سورة البقرة, Al-Baqara, Chapter #2, Verse #204)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(2) We have explained in detail in this Qur'an, for the benefit of mankind, every kind of similitude: but man is, in most things, contentious.

(سورة الكهف, Al-Kahf, Chapter #18, Verse #54)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)

(3) And they say, "Are our gods best, or he?" This they set forth to thee, only by way of disputation: yea, they are a contentious people.

(سورة الزخرف, Az-Zukhruf, Chapter #43, Verse #58)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)