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