1. In a swift manner
   - swiftly

See also: fleet

• oily
• oink
• ointment
• Oireachtas
• OIS
• Ojibwa
• Ojibway
• Ojos del Salado
• ok
• oka
• okapi
• Okapia
• Okapia johnstoni
• okay
• Okeechobee
• Okeechobee Waterway
• Okefenokee Swamp
• okeh
• Oken
• Okenfuss
• okey
• okey-doke
• okey-dokey
• Okinawa
• Okinawa campaign