- over-suspicious
- on reflection
- open to suggestions
- other ranks
- out-of-doors
- outlying districts
- on the far side of
- occupied in
- observance of
- on the HP
- on horseback
- official killer
- outgoing person
- ostenta-tious
- ossified
- old fogy
- orga-nize
- of no consequence
- order someone about
- observe the rules
- overview
- order back
- opulently
- obit
- objects
- on the distaff side
- out of position
- orthodontist
- occa-sionally
- official residence
- o'clock
- of benefit
- off the peg
- olive green
- on the other hand
- on the top
- open one's heart
- open to
- optical
- officiation
- of prey
- overjoy-ed
- outward show
- of unknown name
- occur in turn
- oversimplified
- object of ridicule
- official separation
- overtures
- onesidedness
- obsessive fear
- obbligato
- over-inflated
- offer marriage
- on schedule
- occur again
- on good terms
- officiate at
- one-to-one
- occupants
- optic
- on the sly
- overplay it
- of current interest
- outpatients' department
- osmosis
- other possibility
- of considerable importance
- of incalculable value
- off the rack
- of greatest significance
- of one's on volition
- of course not
- out in the open
- old clothes
- overambitious
- open someone's eyes
- offcial
- omnivo-rant
- oxen
- overstress
- Olympic
- of influence
- opportunity to purchase
- on the authority of
- ozone-friendly
- overfeed
- over-hastily
- over and over again
- out-think
- other side
- oblong
- over-elaborate
- on the way up
- outrigger
- on one side
- of the greatest significance
- on one's stomach
- opposite number
- occidental