There are a total of 42 10-letter words containing 'kr', and the number may vary in different dictionaries. You can specify the dictionary and order.

• backrowers ₂₃
• backrushes ₂₃
• bankrolled ₂₁
• bankroller ₂₀
• bankruptcy ₂₇
• bankrupted ₂₃
• blitzkrieg ₂₉
• buckraming ₂₇
• checkreins ₂₃
• checkrooms ₂₅
• checkrowed ₂₆
• cloakrooms ₂₁
• jackrabbit ₃₂
• jackrolled ₂₉
• kallikrein ₂₁
• kriegspiel ₂₀
• kromeskies ₂₁
• krugerrand ₁₉
• krummhorns ₂₄
• kryptonite ₂₀
• muckrakers ₂₅
• muckraking ₂₈
• sauerkraut ₁₆
• sitzkriegs ₂₅
• skreeghing ₂₁
• skreighing ₂₁
• slickrocks ₂₅
• stockrooms ₂₀
• verkrampte ₂₄
• checkrails ₂₁
• krakowiaks ₂₅
• kreasoting ₁₅
• kreosoting ₁₅
• kryometers ₁₉
• skrieching ₂₀
• skrieghing ₁₉
• skrimmaged ₂₀
• skrimmages ₁₉
• skrimshank ₂₃
• stackrooms ₁₈
• stockroute ₁₆
• trackroads ₁₇

There are 42 10-letter words containing kr in the well-known word game dictionary, 22 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 40 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 29 in the Words with Friends (WWF) dictionary.