1. Having no owner
   - ownerless

Antonym: owned

• Olivier
• olivine
• olla
• olla podrida
• Ollari
• olm
• Olmec
• Olmsted
• ology
• oloroso
• Olympia
• Olympiad
• olympian
• Olympian Games
• Olympian Zeus
• Olympic
• Olympic Games
• Olympic god
• Olympic National Park
• olympic salamander
• uninsured
• unintegrated
• unintelligent
• unintelligently
• unintelligibility