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555+ Extraordinary Words that Start with O in English

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Looking for the best articles to read? The following article is the useful list of words that start with O in English. Having a good vocabulary to draw from can help you write more effectively.

Words That Start with O

555+ Extraordinary Words that Start with O in English 1

Common Words that Start with O

O Words Example Sentences
Observe I like to observe the stars at night.
Occur Accidents can occur at any time.
Offend I apologize if I offend you with my words.
Offer The store is offering a discount on all their products.
Often I often go for a walk in the park.
Old My grandfather is very old and wise.
On Please turn on the lights.
Once I went to Paris once and loved it.
Only I have only one dollar left in my wallet.
Open Can you please open the window?
Opinion Everyone has their own opinion on this matter.
Opportunity Don’t miss this opportunity to travel abroad.
Opposite The hotel is located opposite the park.
Option You have the option to choose between two colors.
Orange I love eating oranges for breakfast.
Order I would like to order a pizza for delivery.
Ordinary This is just an ordinary day for me.
Organize Let’s organize the books on the shelf.
Original This painting is an original by Picasso.
Other I have other plans for this weekend.
Ought You ought to study harder for your exams.
Out Please take the trash out.
Outdoor I love spending time in the outdoor.
Outstanding Your performance was outstanding.
Over The game is over, we lost.
Own I have my own car now.
Owner The owner of the restaurant is very friendly.
Oxygen We need oxygen to breathe.
Oyster I would like to try some fresh oysters.

Things that Start with O

Here are some common things that start with the letter O:

  • Orange
  • Octopus
  • Oven
  • Oil
  • Onion
  • Omelette
  • Oak
  • Oar
  • Office
  • Opera
  • Oatmeal
  • Otter
  • Owl
  • Orchid
  • Ocean
  • Olive
  • Oyster
  • Overcoat
  • Outlet
  • Ornament
Related  358 Positive Words that Start with O

Adjectives that Start with O

  • Obese
  • Obnoxious
  • Obscene
  • Obsessive
  • Obsolete
  • Obtuse
  • Occasional
  • Odd
  • Odorous
  • Offbeat
  • Offensive
  • Official
  • Oily
  • Old-fashioned
  • Olden
  • Olive
  • Olympian
  • Omnipotent
  • Omnipresent
  • Omniscient
  • Onerous
  • Only
  • Open
  • Opportunistic
  • Optimistic
  • Optional
  • Orange
  • Orderly
  • Organic
  • Ornate

Nouns that Start with O

  • Oak
  • Oasis
  • Oath
  • Obelisk
  • Object
  • Objective
  • Obligation
  • Obsession
  • Obstacle
  • Occasion
  • Occupation
  • Ocean
  • Octave
  • Octopus
  • Odor
  • Offense
  • Offering
  • Office
  • Officer
  • Official
  • Offset
  • Oil
  • Ointment
  • Okay
  • Olympics
  • Omega
  • Omen
  • Onset
  • Opera
  • Opportunity

Verbs that Start with O

  • Obey
  • Object
  • Oblige
  • Observe
  • Obtain
  • Occur
  • Offend
  • Offer
  • Officiate
  • Ogle
  • Oil
  • Omit
  • Open
  • Operate
  • Oppose
  • Opt
  • Optimize
  • Order
  • Organize
  • Originate
  • Ornament
  • Oscillate
  • Ostracize
  • Outdo
  • Outfit
  • Outgrow
  • Outline
  • Outmaneuver
  • Outperform
  • Outshine

Adverbs that Start with O

  • Obviously
  • Occasionally
  • Oftentimes
  • Often
  • Once
  • Onward
  • Only
  • Openly
  • Oppositely
  • Oppressively
  • Orderly
  • Ordinarily
  • Out
  • Outdoors
  • Outlandishly
  • Outrageously
  • Outside
  • Outward
  • Overboard
  • Overhead
  • Overly
  • Overnight
  • Overseas
  • Overwhelmingly
  • Owlishly

Positive Words That Start With O

  • Oasis
  • Objective
  • Obliging
  • Observant
  • Obtainable
  • Occur
  • Oceanic
  • Okay
  • Olympian
  • Omnipotent
  • On
  • One
  • Ongoing
  • Onward
  • Open
  • Open-handed
  • Open-hearted
  • Open-minded
  • Opportune
  • Optimistic
  • Optimum
  • Orderly
  • Organic
  • Organized
  • Original
  • Outstanding
  • Overcome
  • Overflowing
  • Overjoyed
  • Over-the-moon
  • Overt
  • Owning
  • Ownable
  • Ozonic

Negative Words that Start with O

  • Objectionable
  • Oblivious
  • Obnoxious
  • Obscene
  • Obsessive
  • Obsolete
  • Obstructive
  • Obtuse
  • Offensive
  • Officious
  • Ominous
  • Opposed
  • Oppressive
  • Opprobrious
  • Opt-out
  • Outcast
  • Outdated
  • Outlawed
  • Outrageous
  • Outspoken
  • Overbearing
  • Overcast
  • Overcomplicated
  • Overcritical
  • Overcrowded
  • Overdue
  • Overly
  • Overpriced
  • Oversensitive
  • Overtaxed

Funny Words that Start with O

  • Obnoxiously
  • Octogenarian
  • Odiferous
  • Off-kilter
  • Offbeat
  • Officious
  • Okey-doke
  • Olio
  • Omg
  • Omnishambles
  • Onomatopoeia
  • Oops
  • Oopsy-daisy
  • Opine
  • Optimist
  • Orangey
  • Orangutan
  • Ouch
  • Outlandish
  • Outrageous
  • Overwhelming
  • Owlish
  • Oxymoron
  • Oyster
  • Ozone

Full List of Words Starting with O

  • Oath
  • Oatmeal
  • Oats
  • Obedience
  • Obliging
  • Obligingly
  • Obedient
  • Obliterate
  • Obediently
  • Obese
  • Object
  • Objection
  • Objectionable
  • Objective
  • Objectively
  • Objectivity
  • Objector
  • Obligate
  • Obligated
  • Obligation
  • Obligatory
  • Oblige
  • Obliged
  • Obliteration
  • Oblique
  • Oblivion
  • Oblong
  • Obnoxious
  • Obnoxiously
  • Obscure
  • Obscurity
  • Observance
  • Observant
  • Observation
  • Oblivious
  • Observatory
  • Obesity
  • Oasis
  • Oat
  • Obsessively
  • Obey
  • Obituary
  • Observe
  • Observer
  • Obstructive
  • Obsession
  • Oaf
  • Oboe
  • Obscene
  • Obscenity
  • Observable
  • Oak
  • Oar
  • Oceanography
  • O’clock
  • Octagon
  • Oases
  • Obsolescence
  • Obsolete
  • Obstacle
  • Obstetrician
  • October
  • Octopi
  • Occasional
  • Obsessive
  • Occasionally
  • Octopus
  • Obstetrics
  • Obstinacy
  • Obstinate
  • Obstinately
  • Obstruct
  • Obstruction
  • Obtrusive
  • Obtuse
  • Obviously
  • Occasion
  • Obtain
  • Obtainable
  • Obsess
  • Obsessed
  • Occult
  • Occupancy
  • Off
  • Offbeat
  • Off-color
  • Off-white
  • Often
  • Odds and Ends
  • Occupant
  • Occupation
  • Occupational
  • Occupied
  • Occupy
  • Obvious
  • Occur
  • Od
  • Odd
  • Oddity
  • Odd Jobs
  • Oddness
  • Odds
  • Off-the-record
  • Off-the-wall
  • Ode
  • Odious
  • Odometer
  • Odor
  • Odyssey
  • Of
  • Offend
  • Offense
  • Offensive
  • Offender
  • Oddly
  • Offer
  • Occurrence
  • Ocean
  • Oceanic
  • Octagonal
  • Octave
  • Offering
  • Offhand
  • Oil Well
  • Oily
  • Offensively
  • Officer
  • Official
  • Officially
  • Officiate
  • Office
  • Officious
  • Offing
  • Off-key
  • Off-limits
  • Off-peak
  • Oils
  • Offset
  • Offshoot
  • Offshore
  • Oh Well
  • Off-ramp
  • Oil
  • Oiled
  • Oilfield
  • Oil Painting
  • Oil Slick
  • Oink
  • Ointment
  • Old
  • Olympic Games
  • Olympics
  • Old Age
  • Olden
  • Old-fashioned
  • Oldie
  • Old Testament
  • Old-timer
  • One-on-one
  • Old World
  • Olive
  • Olive Oil
  • Olympic
  • Ombudsman
  • Offspring
  • Offstage
  • Ok
  • One-night Stand
  • Okay
  • Okra
  • Ogle
  • Omen
  • Oh
  • Ohm
  • Ominous
  • Ominously
  • Omission
  • Omniscient
  • Omit
  • Ogre
  • Omnipotence
  • Omniscience
  • Omelet
  • On
  • Once
  • Once-over
  • Oncoming
  • One
  • One-sided
  • Onslaught
  • Onerous
  • Onetime
  • One-to-one
  • Onion
  • On-line
  • Onlooker
  • Only
  • Only Child
  • On-ramp
  • Onrush
  • Oneself
  • Onto
  • Onus
  • Onward
  • Onset
  • Operationally
  • Oodles
  • Operation
  • One-track Mind
  • Oops
  • Ooze
  • Opal
  • Opaque
  • Open
  • Open-air
  • Open-ended
  • Opener
  • Open House
  • Opening
  • Openly
  • Operational
  • Open-minded
  • Openness
  • Onwards
  • One-upmanship
  • One-way
  • Ongoing
  • Opera House
  • Operate
  • Operatic
  • Operating System
  • Operative
  • Operator
  • Ophthalmologist
  • Ophthalmology
  • Opt
  • Optometrist
  • Optometry
  • Opium
  • Opossum
  • Operating Room
  • Opponent
  • Opportune
  • Opportunism
  • Opportunist
  • Opportunistic
  • Open Season
  • Opera
  • Opportunity
  • Opposition
  • Orchard
  • Orchestra
  • Opinion
  • Oppose
  • Opposed
  • Opposite
  • Oppress
  • Oppressed
  • Oppression
  • Opinionated
  • Oppressive
  • Oppressor
  • Opulence
  • Optician
  • Optimism
  • Operable
  • Optimist
  • Optimistic
  • Optimistically
  • Optimum
  • Option
  • Optic
  • Opinion Poll
  • Optical
  • Optical Illusion
  • Opulent
  • Or
  • Oration
  • Orator
  • Oratory
  • Orbit
  • Orbital
  • Orchestral
  • Orally
  • Orange
  • Orangutan
  • Oral
  • Orchestrate
  • Optional
  • Ordeal
  • Orchestration
  • Ordain
  • Order
  • Orderly
  • Ordinal
  • Ordinance
  • Original
  • Ordination
  • Ore
  • Organ
  • Organic
  • Organically
  • Orchid
  • Originality
  • Organism
  • Organist
  • Orgasm
  • Oriental
  • Orientation
  • Oriented
  • Origin
  • Ordinarily
  • Ordinary
  • Organization
  • Originally
  • Originate
  • Orgy
  • Orient
  • Ornament
  • Ornamental
  • Ornate
  • Organizational
  • Organize
  • Organized
  • Ornithologist
  • Ornithology
  • Orthopedics
  • Oscar
  • Orphan
  • Organizer
  • Ornately
  • Orphanage
  • Orthodontics
  • Orthodontist
  • Ostentatiously
  • Ostracism
  • Ostracize
  • Outer
  • Oriole
  • Outermost
  • Orthodox
  • Ostentation
  • Ostentatious
  • Outer Space
  • Ostrich
  • Other
  • Otherwise
  • Otter
  • Ounce
  • Our
  • Orthodoxy
  • Ouster
  • Out
  • Outage
  • Ouch
  • Ought to
  • Outback
  • Outburst
  • Outcast
  • Outclass
  • Outcome
  • Outcropping
  • Outgrown
  • Ovarian
  • Ovary
  • Ovation
  • Outlying
  • Outmaneuver
  • Out-of-bounds
  • Ours
  • Ourselves
  • Oust
  • Outbid
  • Outboard Motor
  • Outbreak
  • Outlook
  • Outdone
  • Outdoor
  • Outfit
  • Outgoing
  • Outgrew
  • Outcry
  • Outdated
  • Outdid
  • Outgrow
  • Outlaw
  • Outlay
  • Outdoors
  • Outfield
  • Outfielder
  • Outlet
  • Outline
  • Outdistance
  • Outdo
  • Outlive
  • Out-of-date
  • Out-of-the-way
  • Outmoded
  • Outnumber
  • Outset
  • Outshine
  • Outside of
  • Outpost
  • Outpouring
  • Output
  • Outrage
  • Outraged
  • Outrageous
  • Out of
  • Outpatient
  • Outperform
  • Outplacement
  • Outreach
  • Outrageously
  • Outran
  • Outright
  • Outhouse
  • Outing
  • Outlast
  • Outsider
  • Outskirts
  • Outsmart
  • Outsourcing
  • Outspoken
  • Outspokenness
  • Outstanding
  • Outrun
  • Outlandish
  • Outgrowth
  • Outstandingly
  • Outstretched
  • Outstrip
  • Outward
  • Outwardly
  • Outwards
  • Outshone
  • Outside
  • Overdone
  • Overdose
  • Overdraw
  • Outweigh
  • Outwit
  • Oval
  • Oven
  • Over
  • Overboard
  • Overcame
  • Overcast
  • Overcharge
  • Overcompensation
  • Overcrowded
  • Overall
  • Overalls
  • Overate
  • Overbearing
  • Overdid
  • Overdo
  • Overnight
  • Overpass
  • Overpopulated
  • Overdrawn
  • Overdrew
  • Overdue
  • Overeat
  • Overcoat
  • Overcome
  • Overcompensate
  • Overeaten
  • Overestimate
  • Overextend
  • Overextended
  • Overhang
  • Overhaul
  • Overlap
  • Overload
  • Overhead
  • Overheard
  • Overjoyed
  • Overland
  • Overlook
  • Overly
  • Overhead Projector
  • Overhear
  • Overflow
  • Overgrown
  • Overhand
  • Overpopulation
  • Overran
  • Overtook
  • Overture
  • Overturn
  • Override
  • Overriding
  • Overrode
  • Overrule
  • Overrun
  • Oversaw
  • Overseas
  • Oversee
  • Overpower
  • Overpowering
  • Overpriced
  • Overseen
  • Overseer
  • Overshadow
  • Overshoot
  • Overshot
  • Oversight
  • Owe
  • Owing to
  • Owl
  • Oversimplification
  • Oversimplify
  • Oversized
  • Overrate
  • Overt
  • Overtake
  • Overtaken
  • Oversleep
  • Overslept
  • Overthrew
  • Overrated
  • Overreact
  • Overridden
  • Overstate
  • Overstep
  • Over-the-counter
  • Overtly
  • Overtone
  • Overview
  • Overweight
  • Overwhelm
  • Overwhelmed
  • Overwhelming
  • Overworked
  • Overwrought
  • Ow
  • Own
  • Owner
  • Ownership
  • Ox
  • Oxen
  • Oxide
  • Oxidize
  • Overthrow
  • Overthrown
  • Overtime
  • Overwhelmingly
  • Overwork
  • Oxygen
  • Oyster
  • Ozone
  • Ozone Layer
Related  1400 Words that Start with W in English

Words that Start with O | Infographic

Words that Start with O

Words that Start with O

Words that Start with O

FAQs on Words that Start with O

Q: What is the longest word that starts with O?

A: The longest word that starts with O is “oxyphenbutazone,” which has 14 letters. It is a type of anti-inflammatory medication.

Q: What are some common O words?

A: Some common O words include “ocean,” “orange,” “office,” “operation,” and “opportunity.”

Q: Are there any O words that have a silent letter?

A: Yes, there are several O words that have a silent letter. For example, “often,” “honest,” and “comb” all have a silent “o.”

Q: What are some O words that are difficult to spell?

A: Some O words that are difficult to spell include “onomatopoeia,” “ophthalmologist,” and “orthodontist.” It’s important to practice spelling these words to avoid misspelling them in important documents.

Q: Are there any O words that have multiple meanings?

A: Yes, there are many O words that have multiple meanings. For example, “over” can mean “above,” “finished,” or “too much.” “Order” can mean “a request for something,” “a command,” or “a sequence of things.” It’s important to understand the context in which the word is being used to determine its meaning.

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John

Wednesday 18th of May 2022

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