1. Quickly aroused to anger
   - choleric, irascible, hotheaded, quick-tempered, short-tempered

See also: ill-natured

• own
• own goal
• own right
• own up
• owned
• owner
• owner-driver
• owner-occupied
• owner-occupier
• ownerless
• ownership
• ox
• ox-eyed
• ox-eyed daisy
• oxacillin
• oxalacetate
• oxalacetic acid
• oxalate
• oxalic acid
• Oxalidaceae
• oxalis
• Oxalis acetosella
• Oxalis caprina
• Oxalis cernua
• Oxalis corniculata