There are a total of 18 10-letter words containing 'shir', and the number may vary in different dictionaries. You can specify the dictionary and order.

• blackshirt ₂₃
• brownshirt ₁₉
• hairshirts ₁₄
• nightshirt ₁₇
• overshirts ₁₆
• redshirted ₁₄
• shirtdress ₁₃
• shirtfront ₁₆
• shirtiness ₁₃
• shirtmaker ₁₉
• shirttails ₁₃
• shirtwaist ₁₅
• sweatshirt ₁₅
• undershirt ₁₅
• campshirts ₁₉
• shiretowns ₁₆
• shirralees ₁₃
• shirtbands ₁₆

There are 18 10-letter words containing shir in the well-known word game dictionary, 13 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 15 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 14 in the Words with Friends (WWF) dictionary.