1. Without properly feathered wings, as penguins.

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

• ipennate,
• impnate,
• Impenate,
• impenne,
• umpennate,
• jmpennate,
• kmpennate,
• ompennate,
• 9mpennate,
• 8mpennate,
• inpennate,
• ikpennate,
• ijpennate,
• imoennate,
• impenante,
• Inpenate,
• Imppenate,
• Impennante,
• Imponate,
• Imbenate