Words that Start with O: List of 240+ O Words with Useful Examples

Words that Start with O! In this lesson, you will learn a list of common words that start with O in English with ESL picture and useful example sentences to help you enhance your vocabulary words.

Table of Contents

Words that Start with O

List of Words that Start with O

Oases
Oasis
Oast
Oas
Oat
Oatcake
Obama
Obedience
Obedient
Obediently
Obeyed
Object
Objected
Objecting
Objection
Objectives
Objectors
Objects
Obligable
Obligate
Obligated
Obligately
Obligates
Obligating
Obligation
Obligational
Obscure
Obscured
Obscurely
Observation
Observational
Observationally
Observations
Observes
Obsessions
Obsessive
Obsessively
Obstructive
Obstructively
Obtain
Occident
Occidental
Occidentalise
Occidentalize
Occidentally
Occidents
Occupancy
Occupant
Occupants
Occupation
Occupational
Occupationally
Occupations
Occupied
Occupier
Occupiers
Occupies
Occupy
Occupying
Occur
Occurred
Occurrence
Occurrences
Occurrent
Occurrents
Occurring
Occurs
Ocean
Oceans
Octagon
Octagonal
Octagonally
Of
Off
Offal
Offals
Offbeat
Offbeats
Offcast
Offcasts
Offcut
Offcuts
Offed
Offence
Offenceless
Offences
Offend
Offended
Offender
Offenders
Offending
Offends
Offense
Offenseless
Offenses
Offensive
Offensively
Offensiveness
Offensives
Offer
Offered
Offerer
Offerers
Offering
Offerings
Offeror
Offerors
Offers
Officer
Officered
Officering
Officers
Offices
Official
Officialise
Officialism
Officialisms
Officialize
Officially
Offline
Offsides
Offspring
Offsprings
Offstage
Oh
Oilskin
Oilskins
Oilstone
Oilstones
Oilway
Oilways
Oily
Ok
Oka
Okapi
Okapis
Okas
Okay
Okayed
Okaying
Okays
Oke
Okes
Okey
Old
Olden
Older
Oldest
Olive
Olympiads
Olympian
Olympic
Ombre
Ones
Oneself
Onion
Online
Only
Onscreen
Onset
Onsets
Onshore
Onside
Open
Openable
Opencast
Opencut
Opened
Operating
Operation
Operational
Opportunity
Opposite
Oppositely
Optic
Optical
Optically
Optician
Optimist
Optimistic
Orange
Orchard
Order
Ordinal
Ordinally
Orient
Originally
Originals
Originate
Originated
Other
Otherness
Others
Otherwhere
Otherwise
Ourselves
Outdate
Outdoor
Outfit
Outgoings
Outlaw
Outline
Output
Outsource
Outspoken
Outstate
Oval
Oven
Overall
Overalled
Overbalance
Overbalanced
Overbalances
Overbalancing
Overcall
Overcalled
Overcast
Overcome
Overeducate
Overeducated
Overeducates
Overeducating
Overeducation
Overstress
Overstressed
Overstresses
Overtake
Overtaken
Ow
Owe
Owed
Ower
Owes
Owing
Owl
Oxen
Oxes
Oxeye
Oxeyes
Oxford
Oxfords
Oxy
Oxygen
Oxytocin
Oyster

Words that Start with O with Examples

Suddenly, an oasis started up before us.
My mind felt like oat bran stirred with a spoon.
Joseph seemed sitting in a sort of Elysium alone, beside a roaring fire; a quart of ale on the table near him, bristling with large pieces of toasted oatcake; and his black, short pipe in his mouth.
He lived in obedience to the church’s teachings.
An object was magnified 200 times by the microscope.
His objection was couched in the strongest terms.
It is an obligate parasite with a complex life cycle.
It’s her moral obligation to tell the police what she knows.
There are many minor and obscure poets in the age of Elizabeth.
She was admitted to the hospital for observation.
95% of patients know their obsessions are irrational.
Obsessive perfectionism can be very irritating.
Prices are based on full occupancy of an apartment.
How much memory does the program occupy?
Miracles sometimes occur, but one has to work terribly hard for them.
In the search of rapid growth index props up the market, the competitive pattern is occurrent change.
What is any ocean but a multitude of drops?
Never put off till tomorrow what can [may] be done today.
A journey of a thousand miles begins with a single step.
It is an offence to sell intoxicating liquor to anyone under the age of 18.
The book might be published without creating offense.
The hotel has a special offer of five nights for the price of three.
The official report basically exonerated everyone.