Odium is a synonym for hate. It begins with the letter O.
oblong
Overseers
Oasis
originonset
offence
another word for chasm that begins with o omission opening oversight
Another word for in front is, obverse.
oleander
· organization
The Maori name for beach beginning with "o" is "onepu."
an O another name for a circle is an O and a spherical
obi