• lindberg,
• linbergh,
• kindbergh,
• pindbergh,
• oindbergh,
• lundbergh,
• ljndbergh,
• lkndbergh,
• londbergh,
• l9ndbergh,
• l8ndbergh,
• libdbergh,
• limdbergh,
• lijdbergh,
• lihdbergh,
• linsbergh,
• linxbergh,
• lincbergh,
• linfbergh,
• linrbergh

• Lindberg,
• lundberg.

The adjective form of the word "Lindbergh" would be "Lindberghian".

The plural form of "Lindbergh" is "Lindberghs".

The singular form of the word "Lindbergh" is "Lindbergh". It is already in its singular form and refers to the proper noun, specifically the last name of the American aviator Charles Lindbergh.