There are a total of 21 11-letter words containing 'seme', and the number may vary in different dictionaries. You can specify the dictionary and order.

• advisements ₂₀
• appeasement ₂₁
• bemusements ₂₂
• debasements ₁₉
• despisement ₁₉
• encasements ₁₉
• endorsement ₁₇
• incasements ₁₉
• indorsement ₁₇
• subbasement ₂₂
• semelparous ₁₅
• semestering ₁₄
• accusements ₁₇
• delassement ₁₄
• embasements ₁₇
• incensement ₁₅
• passemented ₁₆
• releasement ₁₃
• semeiologic ₁₆
• semelparity ₁₈
• surbasement ₁₅

There are 21 11-letter words containing seme in the well-known word game dictionary, 11 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 20 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 10 in the Words with Friends (WWF) dictionary.