There are a total of 14 4-letter words containing 'xy', and the number may vary in different dictionaries. You can specify the dictionary and order.

• boxy ₁₆
• dexy ₁₄
• doxy ₁₄
• foxy ₁₆
• nixy ₁₄
• pixy ₁₆
• poxy ₁₆
• sexy ₁₃
• waxy ₁₆
• xyst ₁₃
• coxy ₁₆
• dixy ₁₅
• jaxy ₂₁
• mixy ₁₆

There are 14 4-letter words containing xy in the well-known word game dictionary, 10 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 14 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 10 in the Words with Friends (WWF) dictionary.