There are a total of 17 4-letter words containing 'zi', and the number may vary in different dictionaries. You can specify the dictionary and order.

• ziff ₁₉
• zigs ₁₅
• zikr ₁₇
• zill ₁₅
• zinc ₁₇
• zine ₁₄
• zing ₁₆
• zins ₁₄
• zips ₁₆
• ziti ₁₃
• zits ₁₃
• zizz ₃₁
• nazi ₁₃
• kazi ₁₇
• zila ₁₃
• zimb ₁₇
• zite ₁₃

There are 17 4-letter words containing zi in the well-known word game dictionary, 11 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 16 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 12 in the Words with Friends (WWF) dictionary.