1. Having the character of, or characteristic of, a traitor
   - faithless, traitorous, unfaithful, treasonable

See also: disloyal, treason

• omasum
• Omayyad
• OMB
• ombre
• ombu
• ombudsman
• Omdurman
• omega
• Omega Centauri
• omega-3
• omega-3 fatty acid
• omega-6
• omega-6 fatty acid
• omelet
• omelet pan
• omelette
• omelette pan
• omen
• omental bursa
• omentum
• omeprazole
• omer
• omerta
• omicron
• omigod