• -phone book,
• pone book,
• ohonebook,
• lhonebook,
• -honebook,
• 0honebook,
• pgonebook,
• pbonebook,
• pnonebook,
• pjonebook,
• puonebook,
• pyonebook,
• phinebook,
• phnonebook,
• phoenbook,
• phoonebook,
• plonebook,
• Fonebook,
• Poehonebook,
• Ponebok

• phone book.

The adjective form of the word "phonebook" is "phonebook". It remains the same in both the noun and adjective form.

The plural of the "phonebook" can be the "phonebooks".

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