The word(s) "subtle" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) No vision can grasp Him, but He grasps all vision. He is Al-Latif (the Most subtle and Courteous), Well-Acquainted with all things.

(سورة الأنعام, Al-An'aam, Chapter #6, Verse #103)
(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) "O my son! If it be (anything) equal to the weight of a grain of mustard seed, and though it be in a rock, or in the heavens or in the earth, Allah will bring it forth. Verily, Allah is subtle (in bringing out that grain), Well-Aware (of its place).

(سورة لقمان, Luqman, Chapter #31, Verse #16)
(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) "Verily, We used to invoke Him (Alone and none else) before. Verily, He is Al-Barr (the Most subtle, Kind, Courteous, and Generous), the Most Merciful."

(سورة الطور, At-Tur, Chapter #52, Verse #28)
(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)