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

• ains ₅
• bins ₈
• dins ₆
• fins ₈
• gins ₇
• hins ₇
• jins ₁₄
• kins ₉
• lins ₆
• pins ₈
• rins ₅
• sins ₅
• tins ₅
• vins ₉
• wins ₈
• yins ₇
• zins ₁₄

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