- on call
- override
- overhead
- over fond
- ovation
- oval-shaped cassia
- outworn
- outwardly
- of the essence
- outstanding
- outspread
- outdistance
- outclass
- owner
- on the level
- oracular
- orgiastic
- on enchant
- off get over
- open space
- on the same level as
- outhouse
- oneself lie down
- outfall
- on time
- out pay
- official procedure
- odd-jobber
- objector
- of noble birth
- one more
- of around
- oxidation
- on the back praise
- over ignore
- of greatest import-ance
- outrider
- on stockpile
- oldage pensioner
- order off
- old horse
- one's stride cope with easily
- one's ground
- on-the-spot
- one thinks fit
- on one's own
- official communica-tion
- original inhabitant
- obliged to
- on all sides
- of the Middle Ages
- obedience to
- orgasm
- office worker
- oneself overstretch oneself
- oneself of obtain
- overabundance
- over-particular
- out of one's hands
- out of the public eye
- omit. neglect
- out exclaim
- one's way into
- out show
- oldness
- out of breath
- on disparage
- off escape
- on exploit
- outdoors
- or
- oral examination
- one by one
- on hire purchase
- on draught
- one's thumbs be idle
- ordering back
- out consume
- optimistically
- out of devastate
- of little consequence
- on one's father's side
- on wish for
- out of reach
- off settle
- off the mark
- over-powered
- on the slant
- one time
- out of favour
- off-white
- out check
- opinion poll
- old-age pension
- out of one's element
- outsource
- octet
- of the same mind
- out attire
- occur to one