- outbursts
- once upon a time
- off-the-cuff
- odd bod
- outlawed
- out of keeping
- on the bottom
- on the dole
- on the job
- on the road to recovery
- one's kip
- overruling
- obesity corpulence
- ouster
- off-centre
- overgrown
- on the brink of
- opposer
- other man
- obliteration
- over-wrought
- on the barrelhead
- other than
- or thereabouts
- ordinances
- ovenproof
- on the same wavelength
- objecting
- out of humour
- old stager
- overdose
- overlooked
- overset
- of substance
- on the qui vive
- one's cross to bear
- opress
- over-brim
- overplayed
- owners
- of importance
- overcrowd
- ordinal number
- one-on-one
- on the stocks
- on one's last legs
- on pins and needles
- odiousness
- obsecration
- overacted
- open to attack
- on full alert
- osculation
- on the outs
- oblate
- over-critical
- offentimes
- on welfare
- on the doorstep
- old lag
- overfamiliar
- old wives' tales
- on the skew
- one's salad days
- obligingly
- over and above that
- out-of-towner
- outside of
- overwight
- out of sort
- overemphasized
- of good report
- owner-occupancy
- of consequence
- overkill
- over-dramatized
- overhadow
- on the blink
- on the wallaby track
- occurrences
- offcuts
- outer limits
- olde worlde
- on the stroke of something
- one's portion
- off target
- oojamaflip
- offprint
- owner-occupier
- once-over
- on the go
- oil the wheels of
- on the way out
- on one's toe
- of ample proportions
- outstan-ding
- on the fritz
- out of true
- oppo. china
- overelaborate