- off plan
- off season
- off someone's back
- off someone's feet
- off someone's hands
- off stump
- off the air
- off the beam
- off the beaten track
- off the cuff
- off the deep end
- off the ground
- off the handle
- off the hook
- off the mark
- off the rack
- off the rails
- off the record
- off the shelf
- off the top of one's head
- off the track
- off the wagon
- off the wall
- off year
- off, be
- off-Broadway
- off-air
- off-balance sheet reserve
- off-base
- off-board
- off-brand
- off-budget
- off-camera
- off-campus
- off-center
- off-centre
- off-color
- off-duty
- off-glide
- off-grid
- off-hour
- off-island
- off-islander
- off-key
- off-kilter
- off-label
- off-licence
- off-license
- off-limits
- off-load
- off-message
- off-mike
- off-off-Broadway
- off-peak
- off-piste
- off-price
- off-pricer
- off-putting
- off-ramp
- off-reserve
- off-road
- off-roader
- off-roading
- off-sales
- off-season
- off-site
- off-speed
- off-street
- off-the-board
- off-the-books
- off-the-cuff
- off-the-face
- off-the-job
- off-the-peg
- off-the-rack
- off-the-record
- off-the-shelf
- off-the-wall
- off-topic
- off-trail
- off-white
- off-year election
- off.
- offal
- offbeat
- offboard
- offcast
- offcut
- offence
- offend
- offended
- offender
- offense
- offenseless
- offensive
- offer
- offer document
- offer price
- offeree
- offering
- offering price
- offeror
- offertory
- offhand
- office
- office automation
- office bearer
- office block
- office boy
- office girl
- office hours
- office junior
- office park
- office seeker
- office-block ballot
- officeholder
- officer
- officer of arms
- officer of the day
- officer of the deck
- officer of the guard
- officer of the watch
- official
- official family
- official strike
- officialdom
- officialese
- officialism
- officiality
- officialize
- officially
- officiant
- officiary
- officiate
- officinal
- officious
- officious will
- offing
- offish
- offlap
- offline
- offload
- offprint
- offscouring
- offscourings
- offscreen
- offset
- offset lithography
- offshoot
- offshore
- offshore dock
- offshore drilling
- offshoreman
- offshoring
- offside
- offsider
- offspring
- offstage
- offtake
- offtrack
- oflag
- oft
- often
- often as not
- oftentimes
- ofuro
- ogam
- oganesson
- ogdoad
- ogee
- ogee arch
- ogham
- ogive
- ogle
- ogonek
- ogre
- ogress
- oh
- ohia lehua
- ohm
- ohmage
- ohmic
- ohmic resistance
- ohmmeter
- oho
- ohv
- oi
- oidium
- oik
- oil
- oil beetle
- oil burner
- oil cake
- oil color
- oil derrick
- oil drum
- oil field
- oil gilding
- oil gland
- oil hardening
- oil meal
- oil of catechumens
- oil of cloves
- oil of lavender
- oil of the sick
- oil of turpentine
- oil of vitriol
- oil of wintergreen
- oil paint
- oil painting
- oil palm
- oil pan
- oil patch
- oil rig
- oil sand
- oil sands
- oil shale
- oil slick
- oil spill
- oil tanker
- oil varnish
- oil well
- oil-cooled
- oil-harden
- oil-immersion objective
- oil-plant
- oil-seed rape
- oilbird
- oilcan
- oilcloth
- oilcup
- oiled
- oiled silk
- oiler
- oilfield
- oilfired
- oilfish
- oilgas
- oillet
- oillionaire
- oilman
- oilpaper
- oilseed
- oilskin
- oilspot glaze
- oilstone
- oiltight
- oily
- oink
- oinochoe
- ointment
- oiticica
- oiticica oil
- ojo caliente
- oka
- okapi
- okay
- oke
- okey-doke
- okle-dokle
- okoume
- okra
- okta
- olallieberry
- old
- old Adam
- old age
- old age pension
- old as Adam
- old bird
- old boy
- old boy network
- old chap
- old chestnut
- old chum
- old clothes man
- old college try, the
- old country
- old covenant
- old face
- old fart
- old fashioned
- old fellow
- old field
- old fogy
- old fustic
- old girl
- old goat
- old gold
- old growth
- old guard
- old habits die hard
- old hand
- old hat
- old identity
- old lady
- old maid
- old man
- old man of the woods
- old man's beard