Ja·pheth 
(jāfĭth′, jăfĭth)
(jāfĭth′, jăfĭth) In the Bible, a son of Noah and the brother of Shem and Ham.
- observably
- observance
- observant
- observantly
- observation
- observational
- observationally
- observatory
- observe
- observer
- observingly
- obsess
- obsession
- obsessional
- obsessionally
- obsessive
- obsessive-compulsive
- obsessive-compulsive disorder
- obsessive-compulsive personality disorder
- obsessively
- obsessiveness
- obsessor
- obsidian
- obsolesce
- obsolescence