Wikipedia:Language learning centre/Word list/O
- oaf
- oafish
- oafs
- oak
- oaken
- oaks
- oakum
- oar
- oars
- oarsman
- oarsmen
- oases
- oasis
- oast
- oat
- oatcakes
- oath
- oaths
- oatmeal
- oats
- obduracy
- obdurate
- obdurately
- obedience
- obedient
- obediently
- obeisance
- obelisk
- obelisks
- obese
- obesity
- obey
- obeyed
- obeying
- obeys
- obfuscate
- obfuscated
- obfuscates
- obfuscation
- obfuscatory
- obituaries
- obituary
- object
- objected
- objectified
- objecting
- objection
- objectionable
- objectionableness
- objectionably
- objections
- objective
- objectively
- objectives
- objectivity
- objectless
- objector
- objectors
- objects
- oblate
- obligate
- obligated
- obligation
- obligations
- obligatorily
- obligatory
- oblige
- obliged
- obliges
- obliging
- obligingly
- oblique
- obliqued
- obliquely
- obliqueness
- obliquity
- obliterate
- obliterated
- obliterates
- obliterating
- obliteration
- oblivion
- oblivious
- obliviousness
- oblong
- oblongs
- obloquy
- obnoxious
- obnoxiously
- obnoxiousness
- oboe
- oboes
- oboist
- obscene
- obscenely
- obscenities
- obscenity
- obscurantism
- obscurantist
- obscuration
- obscure
- obscured
- obscurely
- obscureness
- obscurer
- obscures
- obscurest
- obscuring
- obscurities
- obscurity
- obsequious
- obsequiously
- obsequiousness
- observability
- observable
- observables
- observably
- observance
- observances
- observant
- observation
- observational
- observationally
- observations
- observatories
- observatory
- observe
- observed
- observer
- observers
- observes
- observing
- obsess
- obsessed
- obsesses
- obsessing
- obsession
- obsessional
- obsessions
- obsessive
- obsessively
- obsessiveness
- obsidian
- obsolescence
- obsolescent
- obsolete
- obstacle
- obstacles
- obstetric
- obstetrician
- obstetricians
- obstetrics
- obstinacy
- obstinate
- obstinately
- obstreperous
- obstruct
- obstructed
- obstructing
- obstruction
- obstructionism
- obstructions
- obstructive
- obstructively
- obstructiveness
- obstructs
- obtain
- obtainable
- obtained
- obtaining
- obtains
- obtrude
- obtruded
- obtruding
- obtrusive
- obtrusiveness
- obtuse
- obtusely
- obtuseness
- obverse
- obviate
- obviated
- obviates
- obviating
- obvious
- obviously
- obviousness
- occasion
- occasional
- occasionally
- occasioned
- occasioning
- occasions
- occident
- occidental
- occipital
- occluded
- occludes
- occlusion
- occult
- occultism
- occults
- occupancies
- occupancy
- occupant
- occupants
- occupation
- occupational
- occupationally
- occupations
- occupied
- occupier
- occupiers
- occupies
- occupy
- occupying
- occur
- occurred
- occurrence
- occurrences
- occurring
- occurs
- ocean
- oceanic
- oceanographer
- oceanographers
- oceanographic
- oceanography
- oceans
- ocelot
- ocelots
- ochre
- ochres
- octagon
- octagonal
- octagons
- octahedral
- octahedron
- octal
- octane
- octanes
- octant
- octave
- octaves
- octavo
- octet
- octets
- october
- octogenarian
- octogenarians
- octopus
- octopuses
- ocular
- oculist
- odd
- odder
- oddest
- oddities
- oddity
- oddjob
- oddly
- oddment
- oddments
- oddness
- odds
- ode
- odes
- odin
- odious
- odiously
- odiousness
- odium
- odiums
- odometer
- odoriferous
- odorous
- odour
- odourless
- odours
- odyssey
- oedema
- oedipus
- oesophagus
- oestrogen
- oestrogens
- oestrus
- oeuvre
- oeuvres
- of
- off
- offal
- offbeat
- offcut
- offcuts
- offence
- offences
- offend
- offended
- offender
- offenders
- offending
- offends
- offensive
- offensively
- offensiveness
- offensives
- offer
- offered
- offering
- offerings
- offers
- offertory
- offhand
- office
- officer
- officers
- officership
- officerships
- offices
- official
- officialdom
- officially
- officialness
- officials
- officiate
- officiated
- officiating
- officious
- officiously
- officiousness
- offprint
- offset
- offshoot
- offshore
- oft
- often
- ogle
- ogled
- ogling
- ogre
- ogres
- ogrish
- oh
- ohio
- ohm
- ohmic
- ohms
- oil
- oilcloth
- oiled
- oiler
- oilers
- oilfield
- oilfields
- oilier
- oiliest
- oiliness
- oiling
- oilman
- oilmen
- oilrig
- oils
- oily
- oink
- oinked
- oinks
- ointment
- ointments
- ok
- okapi
- okapis
- okay
- okayed
- okays
- oklahoma
- old
- oldage
- olden
- older
- oldest
- oldfashioned
- oldie
- oldish
- oldmaids
- oldtimer
- oldtimers
- ole
- oleander
- oleanders
- olfactory
- olive
- oliveoil
- oliver
- olives
- olm
- olms
- olympia
- olympiad
- olympian
- olympic
- olympics
- olympus
- ombudsman
- ombudsmen
- omega
- omelette
- omelettes
- omen
- omens
- ominous
- ominously
- omission
- omissions
- omit
- omits
- omitted
- omitting
- omnibus
- omnibuses
- omnidirectional
- omnipotence
- omnipotent
- omnipresence
- omnipresent
- omniscience
- omniscient
- omnivore
- omnivores
- omnivorous
- on
- onager
- onagers
- once
- one
- oneness
- oner
- onerous
- ones
- oneself
- onesided
- onesidedly
- onesidedness
- ongoing
- onion
- onions
- onlooker
- onlookers
- onlooking
- only
- onlybegotten
- onset
- onshore
- onslaught
- onslaughts
- ontario
- onto
- ontogeny
- ontological
- ontologically
- ontology
- onus
- onuses
- onward
- onwards
- onyx
- onyxes
- oocytes
- oodles
- ooh
- oolitic
- oology
- oompah
- oops
- ooze
- oozed
- oozes
- oozing
- oozy
- opacity
- opal
- opalescent
- opals
- opaque
- open
- opened
- opener
- openers
- openhanded
- openhandedness
- openheart
- openhearted
- opening
- openings
- openly
- openminded
- openmindedness
- openness
- opens
- opera
- operable
- operand
- operands
- operas
- operate
- operated
- operates
- operatic
- operating
- operation
- operational
- operationally
- operations
- operative
- operatives
- operator
- operators
- operculum
- operetta
- operettas
- ophthalmic
- ophthalmics
- ophthalmologist
- ophthalmologists
- ophthalmology
- opiate
- opiates
- opine
- opined
- opines
- opining
- opinion
- opinionated
- opinions
- opioid
- opioids
- opium
- opossum
- opponent
- opponents
- opportune
- opportunely
- opportunism
- opportunist
- opportunistic
- opportunistically
- opportunists
- opportunities
- opportunity
- oppose
- opposed
- opposes
- opposing
- opposite
- oppositely
- opposites
- opposition
- oppositional
- oppositions
- oppress
- oppressed
- oppresses
- oppressing
- oppression
- oppressions
- oppressive
- oppressively
- oppressiveness
- oppressor
- oppressors
- opprobrious
- opprobrium
- opt
- opted
- optic
- optical
- optically
- optician
- opticians
- optics
- optima
- optimal
- optimality
- optimally
- optimisation
- optimisations
- optimise
- optimised
- optimiser
- optimisers
- optimises
- optimising
- optimism
- optimist
- optimistic
- optimistically
- optimists
- optimum
- opting
- option
- optional
- optionality
- optionally
- options
- optoelectronic
- opts
- opulence
- opulent
- opus
- opuses
- or
- oracle
- oracles
- oracular
- oral
- orally
- orang
- orange
- oranges
- orangs
- orangutan
- orangutans
- orate
- orated
- orates
- orating
- oration
- orations
- orator
- oratorical
- oratorio
- orators
- oratory
- orb
- orbit
- orbital
- orbitals
- orbited
- orbiter
- orbiting
- orbits
- orbs
- orca
- orchard
- orchards
- orchestra
- orchestral
- orchestras
- orchestrate
- orchestrated
- orchestrates
- orchestrating
- orchestration
- orchestrations
- orchestrator
- orchid
- orchids
- ordain
- ordained
- ordaining
- ordains
- ordeal
- ordeals
- order
- ordered
- ordering
- orderings
- orderless
- orderlies
- orderliness
- orderly
- orders
- ordinal
- ordinals
- ordinance
- ordinances
- ordinands
- ordinarily
- ordinariness
- ordinary
- ordinate
- ordinates
- ordination
- ordinations
- ordnance
- ordure
- ore
- ores
- organ
- organelles
- organic
- organically
- organics
- organisable
- organisation
- organisational
- organisationally
- organisations
- organise
- organised
- organiser
- organisers
- organises
- organising
- organism
- organisms
- organist
- organists
- organs
- organza
- orgies
- orgy
- orient
- orientable
- oriental
- orientalism
- orientals
- orientate
- orientated
- orientates
- orientation
- orientations
- oriented
- orienteering
- orienting
- orifice
- orifices
- origami
- origin
- original
- originality
- originally
- originals
- originate
- originated
- originates
- originating
- origination
- originator
- originators
- origins
- orimulsion
- ornament
- ornamental
- ornamentation
- ornamented
- ornamenting
- ornaments
- ornate
- ornately
- ornithological
- ornithologist
- ornithologists
- ornithology
- orphan
- orphanage
- orphanages
- orphaned
- orphans
- orpheus
- orthodontist
- orthodox
- orthodoxies
- orthodoxy
- orthogonal
- orthogonality
- orthogonally
- orthographic
- orthographical
- orthographically
- orthography
- orthonormal
- orthopaedic
- orthopaedics
- orthorhombic
- oryxes
- oscar
- oscars
- oscillate
- oscillated
- oscillates
- oscillating
- oscillation
- oscillations
- oscillator
- oscillators
- oscillatory
- oscilloscope
- oscilloscopes
- osiris
- oslo
- osmium
- osmosis
- osmotic
- osprey
- ospreys
- ossification
- ossified
- ostensible
- ostensibly
- ostentation
- ostentatious
- ostentatiously
- osteoarthritis
- osteopath
- osteopaths
- osteopathy
- osteoporosis
- ostler
- ostlers
- ostracise
- ostracised
- ostracism
- ostrich
- ostriches
- other
- otherness
- others
- otherwise
- otter
- otters
- ottoman
- ouch
- ought
- ounce
- ounces
- our
- ours
- ourselves
- oust
- ousted
- ouster
- ousting
- ousts
- out
- outage
- outages
- outback
- outbid
- outbids
- outboard
- outbound
- outbreak
- outbreaks
- outbred
- outbuilding
- outbuildings
- outburst
- outbursts
- outcall
- outcast
- outcasts
- outclassed
- outcome
- outcomes
- outcries
- outcrop
- outcrops
- outcry
- outdated
- outdid
- outdo
- outdoes
- outdoing
- outdone
- outdoor
- outdoors
- outer
- outermost
- outface
- outfall
- outfalls
- outfield
- outfit
- outfits
- outfitters
- outflank
- outflanked
- outflow
- outflows
- outfox
- outfoxed
- outfoxes
- outgo
- outgoing
- outgoings
- outgrew
- outgrow
- outgrowing
- outgrown
- outgrowth
- outgrowths
- outguess
- outhouse
- outhouses
- outing
- outings
- outlandish
- outlast
- outlasted
- outlasts
- outlaw
- outlawed
- outlawing
- outlawry
- outlaws
- outlay
- outlays
- outlet
- outlets
- outlier
- outliers
- outline
- outlined
- outlines
- outlining
- outlive
- outlived
- outlives
- outliving
- outlook
- outlooks
- outlying
- outmanoeuvre
- outmanoeuvred
- outmoded
- outmost
- outnumber
- outnumbered
- outnumbering
- outnumbers
- outpace
- outpaced
- outpacing
- outpatient
- outpatients
- outperform
- outperformed
- outperforming
- outperforms
- outplacement
- outplay
- outplayed
- outpointed
- outpointing
- outpost
- outposts
- outpouring
- outpourings
- output
- outputs
- outputting
- outrage
- outraged
- outrageous
- outrageously
- outrages
- outraging
- outran
- outrank
- outreach
- outride
- outrider
- outriders
- outrigger
- outright
- outrun
- outruns
- outs
- outsell
- outset
- outsets
- outshine
- outshines
- outshining
- outshone
- outside
- outsider
- outsiders
- outsides
- outsize
- outskirts
- outsmart
- outsold
- outsourcing
- outspan
- outspoken
- outspokenly
- outspokenness
- outspread
- outstanding
- outstandingly
- outstation
- outstations
- outstay
- outstayed
- outstep
- outstretched
- outstrip
- outstripped
- outstripping
- outstrips
- outvoted
- outward
- outwardly
- outwards
- outweigh
- outweighed
- outweighing
- outweighs
- outwit
- outwith
- outwits
- outwitted
- outwitting
- outwork
- outworking
- ova
- oval
- ovals
- ovarian
- ovaries
- ovary
- ovate
- ovation
- ovations
- oven
- ovens
- over
- overact
- overacted
- overacting
- overactive
- overacts
- overall
- overallocation
- overalls
- overambitious
- overanxious
- overate
- overbearing
- overboard
- overburdened
- overcame
- overcapacity
- overcast
- overcharge
- overcharged
- overcharging
- overcoat
- overcoats
- overcome
- overcomes
- overcoming
- overcommitment
- overcommitments
- overcompensate
- overcomplexity
- overcomplicated
- overconfident
- overcook
- overcooked
- overcrowd
- overcrowded
- overcrowding
- overdetermined
- overdid
- overdo
- overdoes
- overdoing
- overdone
- overdose
- overdosed
- overdoses
- overdosing
- overdraft
- overdrafts
- overdramatic
- overdraw
- overdrawn
- overdressed
- overdrive
- overdubbing
- overdue
- overeat
- overeating
- overeats
- overemotional
- overemphasis
- overemphasise
- overemphasised
- overenthusiastic
- overestimate
- overestimated
- overestimates
- overestimating
- overestimation
- overexposed
- overexposure
- overextended
- overfamiliarity
- overfed
- overfeed
- overfeeding
- overfill
- overfishing
- overflow
- overflowed
- overflowing
- overflown
- overflows
- overfly
- overflying
- overfull
- overgeneralised
- overgeneralising
- overgrazing
- overground
- overgrown
- overgrowth
- overhand
- overhang
- overhanging
- overhangs
- overhasty
- overhaul
- overhauled
- overhauling
- overhauls
- overhead
- overheads
- overhear
- overheard
- overhearing
- overhears
- overheat
- overheated
- overheating
- overhung
- overincredulous
- overindulgence
- overindulgent
- overinflated
- overjoyed
- overkill
- overladen
- overlaid
- overlain
- overland
- overlap
- overlapped
- overlapping
- overlaps
- overlay
- overlaying
- overlays
- overleaf
- overlie
- overlies
- overload
- overloaded
- overloading
- overloads
- overlong
- overlook
- overlooked
- overlooking
- overlooks
- overlord
- overlords
- overly
- overlying
- overmanning
- overmantel
- overmatching
- overmuch
- overnight
- overoptimistic
- overpaid
- overpass
- overpay
- overpayment
- overplay
- overplayed
- overplaying
- overpopulated
- overpopulation
- overpopulous
- overpower
- overpowered
- overpowering
- overpoweringly
- overpowers
- overpressure
- overpriced
- overprint
- overprinted
- overprinting
- overprints
- overproduced
- overproduction
- overqualified
- overran
- overrate
- overrated
- overreach
- overreached
- overreaching
- overreact
- overreacted
- overreacting
- overreaction
- overreacts
- overrepresented
- overridden
- override
- overrides
- overriding
- overripe
- overrode
- overrule
- overruled
- overruling
- overrun
- overrunning
- overruns
- overs
- oversampled
- oversampling
- oversaw
- overseas
- oversee
- overseeing
- overseen
- overseer
- overseers
- oversees
- oversensitive
- oversensitivity
- oversexed
- overshadow
- overshadowed
- overshadowing
- overshadows
- overshoot
- overshooting
- overshoots
- overshot
- oversight
- oversights
- oversimplification
- oversimplifications
- oversimplified
- oversimplifies
- oversimplify
- oversimplifying
- oversize
- oversized
- oversleep
- overslept
- overspend
- overspending
- overspent
- overspill
- overstaffed
- overstate
- overstated
- overstatement
- overstates
- overstating
- overstep
- overstepped
- overstepping
- oversteps
- overstocked
- overstocking
- overstress
- overstressed
- overstretch
- overstretched
- overstrung
- overstuffed
- oversubscribed
- oversupply
- overt
- overtake
- overtaken
- overtaker
- overtakers
- overtakes
- overtaking
- overtax
- overthetop
- overthrew
- overthrow
- overthrowing
- overthrown
- overthrows
- overtightened
- overtime
- overtly
- overtness
- overtone
- overtones
- overtook
- overtops
- overture
- overtures
- overturn
- overturned
- overturning
- overturns
- overuse
- overused
- overuses
- overvalue
- overvalued
- overview
- overviews
- overweening
- overweight
- overwhelm
- overwhelmed
- overwhelming
- overwhelmingly
- overwhelms
- overwinter
- overwintered
- overwintering
- overwork
- overworked
- overworking
- overwrite
- overwrites
- overwriting
- overwritten
- overwrote
- overwrought
- oviduct
- ovoid
- ovular
- ovulation
- ovum
- ow
- owe
- owed
- owes
- owing
- owl
- owlet
- owlets
- owlish
- owlishly
- owls
- own
- owned
- owner
- owners
- ownership
- ownerships
- owning
- owns
- ox
- oxalate
- oxalic
- oxcart
- oxen
- oxford
- oxidant
- oxidants
- oxidation
- oxide
- oxides
- oxidisation
- oxidise
- oxidised
- oxidiser
- oxidising
- oxtail
- oxtails
- oxygen
- oxygenated
- oxygenating
- oxygenation
- oxymoron
- oxymoronic
- oyster
- oysters
- ozone
- ozonefriendly