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

• boxy ₁₆
• coxa ₁₄
• doxx ₁₉
• doxy ₁₄
• foxy ₁₆
• moxa ₁₄
• oxen ₁₂
• oxer ₁₁
• oxes ₁₁
• oxic ₁₄
• oxid ₁₂
• oxim ₁₄
• poxy ₁₆
• coxy ₁₆

There are 14 4-letter words containing ox in the well-known word game dictionary, 12 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 12 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 13 in the Words with Friends (WWF) dictionary.