1. That may be avowed.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• avoiable,
• zvowable,
• svowable,
• wvowable,
• qvowable,
• acowable,
• abowable,
• agowable,
• afowable,
• aviwable,
• avkwable,
• avlwable,
• avpwable,
• av0wable,
• av9wable,
• avoable,
• avowble,
• Avowible,
• Avowalble,
• Avalowable