There are a total of 22 11-letter words containing 'aqua', and the number may vary in different dictionaries. You can specify the dictionary and order.

• aquaculture ₂₇
• aquamaniles ₂₆
• aquamarines ₂₅
• aquaplaners ₂₆
• aquaplaning ₂₉
• aquarellist ₂₃
• aquatically ₂₈
• aquatinters ₂₂
• aquatinting ₂₅
• aquatintist ₂₂
• semiaquatic ₂₇
• aquafarming ₂₆
• aquaerobics ₂₄
• aquafitness ₂₃
• aquafortist ₂₃
• aqualeather ₂₃
• aquamanales ₂₂
• aquanautics ₂₂
• aquaphobias ₂₇
• aquaphobics ₂₉
• pentaquarks ₂₆
• seaquariums ₂₂

There are 22 11-letter words containing aqua in the well-known word game dictionary, 11 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 22 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 11 in the Words with Friends (WWF) dictionary.