• pinnaped,
• oinniped,
• linniped,
• -inniped,
• 0inniped,
• punniped,
• pjnniped,
• pknniped,
• ponniped,
• p9nniped,
• p8nniped,
• pibniped,
• pimniped,
• pijniped,
• piniped,
• Pinneped,
• Pinnopied,
• Pennyped,
• Pinnipid,
• Puniped

• pinnipedia.

The adjective form of the word "pinniped" is "pinnipedal".

The plural of the "pinniped" can be the "pinnipeds".

The singular of the "pinniped" can be the "pinniped".