1. An act (or failure to act) that disappoints someone
   - disappointment

Type of: failure

• marine
• marine animal
• marine archaeology
• marine archeology
• marine biologist
• marine biology
• Marine Corps
• Marine Corps Intelligence Activity
• marine creature
• marine engineer
• marine glue
• marine iguana
• Olympics
• Olympus
• omadawn
• omadhaun
• omadhawn
• Omaha
• Oman
• Omani
• Omani monetary unit
• Omani rial
• Omar Bradley
• Omar Khayyam
• Omar Nelson Bradley