800+ Words That Start with O (O Words in English)

A comprehensive list of common words that start with O! In the modern English alphabet,Ois the fifteenth letter. In English,Ois the fourth most common letter. It originates in Phoenician times, where it meant “eye.” Although most letters have gone through many changes,Ohas stayed largely the same.Ois usually pronounced “oh” or “aw.”

单词that Start with O

世界卫生大会t Are Words that Start with O?

Simple O Words with Examples

单词 Example Sentences
Oak Theold oaktree provided shade on a hot day.
Odd It’soddthat she didn’t show up to the party.
Off Turnoffthe lights before you leave the room.
Oil The chef drizzled oliveoilover the salad.
Okay “Are youokay?”asked the concerned friend.
Old My grandfather is quiteold,but he’s still active.
One Oneof the best books I’ve ever read is “Harry Potter.”
Open Pleaseopenthe window to let in some fresh air.
Orange Theorangefruit is rich in vitamin C.
Out The cat snuckoutof the house through the open window.

Explore more words that start with…
A|B|C|D|E|F|G|H|I|J|K|L|M|N
O|P|Q|R|S|T|U|V|W|X|Y|Z

Positive Words that Start with O

  • Oasis
  • Oath
  • Obedient
  • Objective
  • Oblige
  • Obliging
  • Observable
  • Observant
  • Obtain
  • Occasion
  • Odyssey
  • Offering
  • Ok
  • Olympian
  • Omnipotent
  • Omniscient
  • Ongoing
  • Onset
  • Onward
  • Open
  • Open-minded
  • Operable
  • Opportune
  • Opportunity
  • Optimism
  • Optimum
  • Option
  • Opulent
  • Orchestrate
  • Ordain
  • Order
  • Orderly
  • Organic
  • Orgasm
  • Oriented
  • Original
  • Originate
  • Ornamental
  • Ornate
  • Outclass
  • Outdo
  • Outperform
  • Outrank
  • Outreach
  • Outshine
  • Outsmart
  • Outstanding
  • Ovation
  • Overjoyed
  • Overtake

Explore more:单词that start withOthat are positive

Descriptive Words that Start with O

  • Oafish
  • Obdurate
  • Obedient
  • Obeisant
  • Obese
  • Objectionable
  • Objective
  • Obligated
  • Oblong
  • Obsolete
  • Obtainable
  • Obtuse
  • Obvious
  • Occasional
  • Oceanic
  • Octagonal
  • Octogenarian
  • Ocular
  • Odd
  • Odious
  • Offbeat
  • Offense
  • Offensive
  • Official
  • Oily
  • Old
  • Olive
  • Olympic
  • One
  • Only
  • Opaque
  • Open
  • Operatic
  • Operating
  • Operative
  • Opportune
  • Opposite
  • Orange
  • Organic
  • Ornate
  • Other
  • Outbound
  • Outdated
  • Outer
  • Outermost
  • Outgoing
  • Outrageous
  • Outside
  • Outspoken
  • Overt

Related:Descriptive Words

形容词that Start with O

  • Oaken
  • Oaten
  • Obedient
  • Obese
  • Objectionable
  • Oblate
  • Obligate
  • Obligational
  • Obligatory
  • Obliging
  • Oblique
  • Obliterable
  • Obliterated
  • Oblong
  • Obscene
  • Obscure
  • Observable
  • Observant
  • Obsolete
  • Occasional
  • Occult
  • Occupied
  • Oceanic
  • Ocular
  • Odd
  • Oddest
  • Odorless
  • Off
  • Offbeat
  • Offensive
  • Offside
  • Oily
  • Olden
  • Olfactory
  • Olive
  • Omissive
  • Omnibus
  • One
  • Ongoing
  • Only
  • Open
  • Opened
  • Operable
  • Opportune
  • Opposed
  • Opposite
  • Original
  • Orthodox
  • Outrageous
  • Outstanding

Learn more:形容词that start withO

单词that Start with O that are Used to Describe Someone

  • Oafish
  • Obedient
  • Objectionable
  • Obliging
  • Oblivious
  • Obnoxious
  • Obsessive
  • Obstructive
  • Occupied
  • Odd
  • Odious
  • Offbeat
  • Offensive
  • Old
  • Older
  • Oldest
  • One
  • One-sided
  • Open
  • Opinionated
  • Oppressive
  • Optimal
  • Optimistic
  • Orderly
  • Ordinary
  • Organized
  • Orphaned
  • Otherwise
  • Our
  • Outgoing
  • Outlandish
  • Outmoded
  • Outraged
  • Outrageous
  • Outspoken
  • Outstanding
  • Overactive
  • Overage
  • Overbearing
  • Overcautious
  • Overjoyed
  • Overrated
  • Overt
  • Overweight
  • Overwhelmed
  • Overwhelming
  • Overworked
  • Overwrought
  • Overzealous
  • Own

Discover more:O Words to Describe Someone

Nouns that Start with O

  • Oaf
  • Oak
  • Oar
  • Oatmeal
  • Obituary
  • Object
  • Objection
  • Occasion
  • Occult
  • Occupation
  • Ocean
  • Octopus
  • Odometer
  • Odor
  • Odyssey
  • Offender
  • Offer
  • Office
  • Officer
  • Official
  • Offshoot
  • Oil
  • Olive
  • Omen
  • One
  • Onion
  • Opal
  • Opening
  • Opera
  • Operator
  • Orb
  • Orbit
  • Otter
  • 爆发
  • Outcast
  • Outcome
  • Outcry
  • Outdoors
  • Outfield
  • Outhouse
  • Oval
  • Ovation
  • Oven
  • Over
  • Overall
  • Overcoat
  • Owl
  • Owner
  • Ox
  • Oyster

Learn more:开头的名词O

Verbs that start with O

  • Obey
  • Object
  • Obligate
  • Oblige
  • Obscure
  • Observe
  • Obsess
  • Obstruct
  • Obtain
  • Occlude
  • Occupy
  • Occur
  • Offend
  • Offer
  • Officiate
  • Ogle
  • Ogle
  • Omit
  • Ooze
  • Open
  • Operate
  • Oppose
  • Oppress
  • Opt
  • Optimize
  • Orbit
  • Orchestrate
  • Ordain
  • Order
  • Organize
  • Orientate
  • Oust
  • Outgrow
  • Outlaw
  • Outline
  • Outsmart
  • Outsource
  • Overburden
  • Overcome
  • Overcook
  • Overdo
  • Overdraw
  • Overflow
  • Overhaul
  • Overload
  • Overpower
  • Oversee
  • Owe
  • Own

Find out more:Verbs that start withO

Common Words that Start with O with Examples

单词 Example Sentences
Obedient The dog wasobedientand always followed its owner’s commands.
Obese The doctor warned the patient that they were at risk for health problems due to beingobese.
Objective The news article was written with anobjectivepoint of view, presenting all sides of the story.
Obligation It is myobligationto attend my sister’s wedding, even though I have a lot of work to do.
Obscure The meaning of the ancient text wasobscure,and scholars struggled to decipher it.
Obsess My friend isobsessedwith collecting antique dolls and has a whole room dedicated to them.
Obsolete The old computer wasobsoleteand could no longer run the latest software.
Obstruct The fallen treeobstructedthe road and prevented traffic from passing through.
Obtain I need toobtaina copy of my birth certificate for my passport application.
Obvious It wasobviousthat the politician was lying, as their story kept changing.

Unique Words that Start with O with Meanings

单词 Meanings
Oasis A fertile spot in a desert, where water is found
Obfuscate To make something unclear or difficult to understand
Oblivion The state of being completely forgotten or unknown
Obsequious Overly eager to please or obey
Odious Extremely unpleasant or repulsive
Officious Overly eager in offering unwanted advice or services
Ogle To stare at someone or something in a lewd or desirous manner
Ominous Giving the impression that something bad or unpleasant is going to happen
Opaque Not able to be seen through; not transparent
Opulent Rich and luxurious
Ornate Elaborately decorated
Ostentatious Showy, in an attempt to impress others
Ostracize To exclude someone from a society or group
Overwrought In a state of emotional turmoil; excessively nervous or excited

O Words Image

单词that Start with O | 1000+ O Words | Words Starting with O Pin

O Words | List of Words that Start with O

单词that Start with Oa

  • Oafish
  • Oak
  • Oaken
  • Oaks
  • Oakum
  • Oar
  • Oars
  • Oarsman
  • Oarsmen
  • Oases
  • Oasis
  • Oat
  • Oaten
  • Oath
  • Oaths
  • Oatmeal
  • Oats

单词that Start with Ob

  • Obduracy
  • Obdurate
  • Obedience
  • Obedient
  • Obediently
  • Obeisance
  • Obeisant
  • Obelisk
  • Obelisks
  • Oberlin
  • Oberon
  • Obese
  • Obesity
  • Obey
  • Obeyed
  • 服从
  • Obeys
  • Obituary
  • Object
  • Objected
  • Objecting
  • Objection
  • Objectionable
  • Objections
  • Objective
  • Objectively
  • Objectives
  • Objector
  • Objectors
  • Objects
  • Oblate
  • Oblation
  • Oblations
  • Obligate
  • Obligated
  • Obligation
  • Obligational
  • Obligations
  • Obligatory
  • Oblige
  • Obliged
  • Obliges
  • Obliging
  • Obligingly
  • Oblique
  • Obliquely
  • Obliquity
  • Obliterable
  • Obliterate
  • Obliterated
  • Obliterating
  • Obliteration
  • Oblivion
  • Oblivious
  • Oblong
  • Obloquy
  • Obnoxious
  • Obscene
  • Obscenity
  • Obscura
  • Obscure
  • Obscured
  • Obscurely
  • Obscures
  • Obscuring
  • Obscurities
  • Obscurity
  • Obsequies
  • Obsequious
  • Obsequiously
  • Obsequiousness
  • Observable
  • Observance
  • Observances
  • Observant
  • Observation
  • Observations
  • Observatories
  • Observatory
  • Observe
  • Observed
  • Observer
  • Observers
  • Observes
  • Observing
  • Obsess
  • Obsessed
  • Obsession
  • Obsessive
  • Obsidian
  • Obsolete
  • Obstacle
  • Obstacles
  • Obstante
  • Obstinacy
  • Obstinate
  • Obstinately
  • Obstreperous
  • Obstruct
  • Obstructed
  • Obstructing
  • Obstruction
  • Obstructions
  • Obstructive
  • Obstructs
  • Obtain
  • Obtainable
  • Obtained
  • Obtaining
  • Obtains
  • Obtrude
  • Obtruded
  • Obtruding
  • Obtrusive
  • Obtuse
  • Obtuseness
  • Obverse
  • Obviate
  • Obviated
  • Obvious
  • Obviously

单词that Start with Oc

  • Occasion
  • Occasional
  • Occasionally
  • Occasioned
  • Occasioning
  • Occasions
  • Occlude
  • Occult
  • Occupancy
  • Occupant
  • Occupants
  • Occupation
  • Occupational
  • Occupations
  • Occupied
  • Occupier
  • Occupiers
  • Occupies
  • Occupy
  • Occupying
  • Occur
  • Occurred
  • Occurrence
  • Occurrences
  • Occurring
  • Occurs
  • Ocean
  • Oceanic
  • Oceans
  • Ochre
  • Oct
  • Octagon
  • Octagonal
  • Octavo
  • October
  • Octogenarian
  • Octopus
  • Ocular
  • Oculist

单词that Start with Od

  • Odd
  • Odder
  • Oddest
  • Oddities
  • Oddity
  • Oddly
  • Odds
  • Odes
  • Odious
  • Odium
  • Odometer
  • Odor
  • Odoriferous
  • Odorless
  • Odorous
  • Odors
  • Odyssey

单词that Start with Oe, Of

  • Oeuvre
  • Oeuvres
  • Of
  • Off
  • Offal
  • Offbeat
  • Offence
  • Offences
  • Offend
  • Offended
  • Offender
  • Offenders
  • Offending
  • Offends
  • Offense
  • Offenses
  • Offensive
  • Offensively
  • Offer
  • Offered
  • Offering
  • Offerings
  • Offers
  • Offhand
  • Office
  • Officer
  • Officered
  • Officers
  • Offices
  • Official
  • Officially
  • Officials
  • Officiate
  • Officiated
  • Officiating
  • Officinalis
  • Officio
  • Officious
  • Officiously
  • Officiousness
  • Offing
  • Offset
  • Offshoot
  • Offshoots
  • Offshore
  • Offside
  • Offspring
  • Often
  • Oftener
  • Oftenest
  • Oftentimes
  • Ofttimes

单词that Start with Og, Oh, Oi, Ok

  • Ogden
  • Ogier
  • Ogilvie
  • Ogilvy
  • Ogle
  • Oglethorpe
  • Ogling
  • Oh
  • Oil
  • Oilcloth
  • Oiled
  • Oiling
  • Oils
  • Oilskin
  • Oilskins
  • Oily
  • Ointment
  • Ointments
  • Ok

单词that Start with Ol

  • Old
  • Olden
  • Older
  • Oldest
  • Oldfield
  • Oldham
  • Oleanders
  • Olfactory
  • Olga
  • Oligarchical
  • Oligarchy
  • Oliphant
  • Olive
  • Oliver
  • Olives
  • Olivet
  • Olivia
  • Olivier
  • Olla
  • Olly
  • Olney
  • Olof
  • Olsen
  • Olson
  • Olympia
  • Olympian
  • Olympic
  • Olympus

单词that Start with Om

  • Omaha
  • 的影子
  • 的影子s
  • Omega
  • Omelet
  • Omen
  • Omens
  • Omer
  • Ominous
  • Ominously
  • Omission
  • Omissions
  • Omissive
  • Omit
  • Omits
  • Omitted
  • Omitting
  • Omni
  • Omnia
  • Omnibus
  • Omnibuses
  • Omnipotence
  • Omnipotent
  • Omnipresent
  • Omniscience
  • Omniscient
  • Omnium
  • Omnivorous

单词that Start with On

  • On
  • Once
  • Oncoming
  • One
  • Oneida
  • Oneness
  • Onerous
  • Ones
  • Oneself
  • One-sided
  • Onesimus
  • Ongoing
  • Onion
  • Onions
  • Online
  • Onlooker
  • Onlookers
  • Only
  • Onset
  • Onslaught
  • Onto
  • Onward
  • Onwards
  • Ooze

单词that Start with Op

  • Opal
  • Opalescent
  • Opals
  • Opaque
  • Open
  • Opened
  • Opening
  • Openly
  • Open-minded
  • Openness
  • Opens
  • Opera
  • Operable
  • Operandi
  • Operas
  • Operate
  • Operated
  • Operates
  • Operatic
  • Operating
  • Operation
  • Operative
  • Operatives
  • Operator
  • Operators
  • Opiate
  • Opiates
  • Opine
  • Opined
  • Opinion
  • Opinionated
  • Opinions
  • Opium
  • Opossum
  • Opponent
  • Opponents
  • Opportune
  • Opportunely
  • Opportunities
  • Opportunity
  • Oppose
  • Opposed
  • Opposer
  • Opposers
  • Opposes
  • Opposing
  • Opposite
  • Opposites
  • Opposition
  • Oppositions
  • Oppress
  • Oppressed
  • Oppresses
  • Oppressing
  • Oppression
  • Oppressions
  • Oppressive
  • Oppressively
  • Oppressor
  • Oppressors
  • Opprobrious
  • Opprobrium
  • Opt
  • Optic
  • Optical
  • Optics
  • Optimal
  • Optimism
  • Optimist
  • Optimistic
  • Optimize
  • Optimum
  • Option
  • Optional
  • Options
  • Opulence
  • Opulent

单词that Start with Or

  • Or
  • Oracle
  • Oracles
  • Oracular
  • Oral
  • Orally
  • Oran
  • Orange
  • Oranges
  • Oration
  • Orations
  • 演说家
  • 演说家ical
  • 演说家io
  • 演说家s
  • 演说家y
  • Orb
  • Orbit
  • Orbits
  • Orbs
  • Orchard
  • Orchards
  • Orchestra
  • Orchestral
  • Orchestras
  • Orchestrate
  • Orchid
  • Orchids
  • Ordain
  • Ordained
  • Ordaining
  • Ordains
  • Ordeal
  • Ordeals
  • Order
  • Ordered
  • 订购
  • Orderlies
  • Orderliness
  • Orderly
  • Orders
  • Ordinaire
  • Ordinaires
  • Ordinance
  • Ordinances
  • Ordinarily
  • Ordinary
  • Ordination
  • Ordnance
  • Ordonnance
  • Ore
  • Ores
  • Organ
  • Organic
  • Organism
  • Organisms
  • Organist
  • Organization
  • Organizations
  • Organize
  • Organized
  • Organizer
  • Organizers
  • Organizing
  • Organs
  • Organum
  • Orgasm
  • Orgies
  • Orgy
  • Oriel
  • Orient
  • Oriental
  • Orientalist
  • Orientals
  • Orientate
  • Orientation
  • Oriented
  • Orifice
  • Orifices
  • Origen
  • Origin
  • Original
  • Originality
  • Originally
  • Originals
  • Originate
  • Originated
  • Originates
  • Originating
  • Origination
  • Originator
  • Originators
  • Origins
  • Oriole
  • Orisons
  • Ornament
  • Ornamental
  • Ornamentation
  • Ornamenting
  • Ornaments
  • Ornate
  • Ornery
  • Orphan
  • Orphaned
  • Orphans
  • Orthodox
  • Orthodoxy
  • Orthography

单词that Start with Os

  • Oscar
  • Oscillating
  • Oscillation
  • Oscillations
  • Osier
  • Osiers
  • Osman
  • Ostensible
  • Ostensibly
  • Ostentation
  • Ostentatious
  • Ostentatiously
  • Ostler
  • Ostracism
  • Ostrich
  • Ostriches

单词that Start with Ot, Ou

  • Other
  • Otherwise
  • Otter
  • Otters
  • Oud
  • Ought
  • Oughtn’t
  • Ounce
  • Ounces
  • Our
  • Ours
  • Ourselves
  • Oursler
  • Oust
  • Ousted
  • Out
  • Outa
  • Outbound
  • 爆发
  • 爆发s
  • Outbuildings
  • Outburst
  • Outbursts
  • Outcast
  • Outcasts
  • Outclass
  • Outcome
  • Outcries
  • Outcry
  • Outdated
  • Outdid
  • Outdo
  • Outdone
  • Outdoor
  • Outdoors
  • Outer
  • Outermost
  • Outfield
  • Outfit
  • Outfits
  • Outflanked
  • Outflow
  • Outgoing
  • Outgrow
  • Outgrown
  • Outgrowth
  • Outhouse
  • Outhouses
  • Outing
  • Outlandish
  • Outlast
  • Outlaw
  • 取缔
  • Outlawry
  • Outlaws
  • Outlay
  • Outlet
  • Outlets
  • Outline
  • Outlined
  • Outlines
  • Outlining
  • Outlive
  • Outlived
  • Outlook
  • Outlying
  • Outmoded
  • Outnumber
  • Outnumbered
  • Outperform
  • Outpost
  • Outposts
  • Outpouring
  • Outpourings
  • Output
  • Outrage
  • Outraged
  • Outrageous
  • Outrageously
  • Outrages
  • Outraging
  • Outram
  • Outran
  • Outrank
  • Outreach
  • Outriders
  • Outright
  • Outro
  • Outros
  • Outrun
  • Outs
  • Outset
  • Outshine
  • Outshone
  • Outside
  • Outsider
  • Outsiders
  • Outsides
  • Outskirts
  • Outsmart
  • Outsource
  • Outspoken
  • Outspread
  • Outstanding
  • Outstretched
  • Outstrip
  • Outstripped
  • Outward
  • Outwardly
  • Outwards
  • Outweigh
  • Outweighed
  • Outweighs
  • Outwit
  • Outwitted
  • Outwork
  • Outworks
  • Outworn
  • Ouverte

单词that Start with Ov

  • Ova
  • Oval
  • Ovals
  • Ovaries
  • Ovary
  • Ovate
  • Ovation
  • Oven
  • Ovens
  • Over
  • Overactive
  • Overage
  • Overall
  • Overalls
  • Overawe
  • Overawed
  • Overbalance
  • Overbalanced
  • Overbearing
  • Overboard
  • Overborne
  • Overburden
  • Overburdened
  • Overcame
  • Overcast
  • Overcautious
  • Overcharged
  • Overcoat
  • Overcoats
  • Overcome
  • Overcomes
  • Overcoming
  • Overcook
  • Overcrowded
  • Overdo
  • Overdoing
  • Overdone
  • Overdraw
  • Overdrawn
  • Overdue
  • Overestimate
  • Overestimated
  • Overflow
  • Overflowed
  • Overflowing
  • Overflows
  • Overgrown
  • Overhang
  • Overhanging
  • Overhangs
  • Overhaul
  • Overhauled
  • Overhauling
  • Overhead
  • Overhear
  • Overheard
  • Overhearing
  • Overheated
  • Overhung
  • Overjoyed
  • Overladen
  • Overlaid
  • Overland
  • Overlap
  • Overlapping
  • Overlay
  • Overload
  • Overloaded
  • Overlook
  • Overlooked
  • Overlooking
  • Overlooks
  • Overlord
  • Overlying
  • Overmastered
  • Overmastering
  • Overmuch
  • Overnight
  • Overplus
  • Overpower
  • Overpowered
  • Overpowering
  • Overpowers
  • Overran
  • Overrate
  • Overrated
  • Overreach
  • Overreached
  • Override
  • Overrule
  • Overruled
  • Overruling
  • Overrun
  • Overrunning
  • Oversea
  • Overseas
  • Oversee
  • Overseer
  • Overseers
  • Overset
  • Overshadow
  • Overshadowed
  • Overshadowing
  • Overshadows
  • Overshoes
  • Overshot
  • Oversight
  • Overslept
  • Overspread
  • Overstep
  • Overstepped
  • Overstrained
  • Overt
  • Overtake
  • Overtaken
  • Overtakes
  • Overtaking
  • Overtaxed
  • Overthrew
  • Overthrow
  • Overthrowing
  • Overthrown
  • Overthrows
  • Overtime
  • Overton
  • Overtook
  • 马甲
  • 马甲ped
  • Overture
  • Overtures
  • Overturn
  • Overturned
  • Overturning
  • Overview
  • Overweening
  • Overweight
  • Overwhelm
  • Overwhelmed
  • Overwhelming
  • Overwhelmingly
  • Overwhelms
  • Overwork
  • Overworked
  • Overwrought
  • Overzealous
  • Ovum

单词that Start with Ow, Ox, Oy

  • Owe
  • Owed
  • Owes
  • Owing
  • Owl
  • Owls
  • Owl’s
  • Own
  • Owned
  • Owner
  • Owners
  • Ownership
  • Owning
  • Owns
  • Ox
  • Oxalic
  • Oxen
  • Oxford
  • Oxidation
  • Oxide
  • Oxides
  • Oxidized
  • Oxidizing
  • Oxygen
  • Oyster
  • Oysters
  • Oz
  • Ozone

单词that Start with O | Images

单词that Start with O Pin

单词Starting with O Pin

Resources Related to Words with O

Discover more A-Z words articles:

Last Updated on April 22, 2023

1 thought on “800+ Words That Start with O (O Words in English)”

Leave a Comment