- old rags
- olfactory
- on duty
- on offer up
- on the road
- on the scent
- on the spot
- on the strength of because of
- on the tip of one's tongue
- one place
- one roaming
- one which deserves to be imitated
- one who creates
- one who enjoys
- one who shaves
- ongoing
- onset
- on the same level as
- official procedure
- one time
- odd-jobber
- one's way into
- on one's deathbed
- on enchant
- off disregard
- obedience to
- off guard
- off-white
- optimistically
- out of someone drain
- on to the land
- ocular
- on eself manage
- on-the-spot
- of the Middle Ages
- offer thanks to
- original inhabitant
- out of one's hands
- outsource
- off get over
- on the back praise
- on stockpile
- on one's own
- one thinks fit
- out disregard
- out of devastate
- oneself overstretch oneself
- oral examination
- outhouse
- on disparage
- oneself lie down
- out-come
- octet
- out show
- outdoor meal
- out of breath
- on attach great importance to
- out check
- out of favour
- outdoors
- out of the public eye
- on focus attention on
- of around
- off limits
- of greatest import-ance
- oneself of obtain
- old-age pension
- off settle
- one's stride cope with easily
- out pay
- one's ground
- omit. neglect
- odd fellow
- on draught
- out consume
- oversensitivity
- oxidation
- overfamiliarity
- on tour
- occur simultaneously
- outer surface
- object on display
- on any occasion
- on shame
- ovum
- over-particular
- originates in
- office worker
- orgasm
- out of public view
- official communica-tion
- overcoat
- officials
- on the other side of
- ought to
- outwork
- of fixed views
- Oz
- on the rise
- on friendly terms