There are a total of 20 4-letter words containing 'zz', and the number may vary in different dictionaries. You can specify the dictionary and order.

• buzz ₂₆
• fizz ₂₅
• fuzz ₂₆
• jazz ₃₁
• jizz ₃₁
• muzz ₂₆
• razz ₂₂
• tizz ₂₂
• wazz ₂₅
• zizz ₃₁
• bazz ₂₄
• gizz ₂₃
• hizz ₂₅
• lezz ₂₂
• mezz ₂₄
• mizz ₂₄
• mozz ₂₄
• pozz ₂₄
• tuzz ₂₂
• zzzs ₃₁

There are 20 4-letter words containing zz in the well-known word game dictionary, 9 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 18 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 10 in the Words with Friends (WWF) dictionary.