Operating room orderly is an outfit. It begins with the letter o.
Outstanding and optimistic are positive words. They begin with the letter o.
Some things that begin with the letter O:outhouseoctopusoptometristopalOscarorangeoak treesoliveoctagonovalovariesorangutanopportunitesoccupied territory
Oceanography and optometry are college subjects. They begin with the letter o.
Odds are a value. It begins with the letter O.
There are no cities in Scotland that begin with the letter O. However, Oban is a town in Scotland.
ofoffonontooppositeoutsideover
OctopusOyster
Oryx
otis
odometer
Oprah
Outstanding