Adjectives that Start with O! In this section, you will learn a list of common words that start with O in English with ESL picture and example sentences to help you enhance your vocabulary words.
Table of Contents
Adjectives that Start with O
List of Adjectives that Start with O
- Owlish
- Oviparous
- Overwrought
- Overwhelming
- Overwhelmed
- Overt
- Oversensitive
- Overrated
- Overjoyed
- Overconfident
- Overblown
- Overactive
- Ovate
- Ovarian
- Oval
- Outstanding
- Outspoken
- Outside
- Outrageous
- Outlandish
- Outgoing
- Outermost
- Outer
- Outdated
- Outbound
- Otiose
- Ostentatious
- Ostensible
- Ossified
- Ornery
- Ornate
- Ornamental
- Original
- Orgiastic
- Organized
- Organic
- Organdy
- Ordinary
- Orderly
- Orange
- Opulent
- Optimistic
- Optimal
- Oppressive
- Opposite
- Opportune
- Opinionated
- Operative
- Operating
- Operatic
- Open-minded
- Open-handed
- Open-ended
- Open
- Opaque
- Opalescent
- Ongoing
- Onerous
- Omnivorous
- Omniscient
- Omnipresent
- Omnipotent
- Ominous
- Olympic
- Olive
- Olfactory
- Old-fashioned
- Oldest
- Older
- Olden
- Old
- Okay
- Oily
- Official
- Offhand
- Offensive
- Offbeat
- Odoriferous
- Odious
- Odd
- Ocular
- Octogenarian
- Octagonal
- Oceanic
- Occupied
- Occlusive
- Occipital
- Occidental
- Occasional
- Obvious
- Obtuse
- Obtainable
- Obstinate
- Obsolete
- Obsessive
- Obsessed
- Observant
- Obsequious
- Obscure
- Obscene
- Obnoxious
- Oblong
- Oblique
- Obliging
- Obligated
- Oblate
- Objective
- Objectionable
- Obese
- Obeisant
- Obedient
- Obdurate
- Oaten
- Oafish
Adjectives that Start with O with Examples
- He was an owlish man, with little round glasses.
- Every bird is oviparous, and it is viviparity, however.
- The heat was overwhelming and people were dropping like flies.
- Such oversensitive children may have attention problems.
- He was overjoyed to see his mother again.
- She was very overactive and had not slept for three nights.
- The plant has oval green leaves marbled with brownish-purple.
- These are the prizes given for the most outstanding British theatrical performances of the year.
- His murder was an outrageous and barbarous act.
- Sales reps need to be outgoing because they are constantly meeting customers.
- They criticized the ostentatious lifestyle of their leaders.
- The ostensible reason for his resignation was ill-health.
- Hitler’s original plan was to kill off all the German Jews.
- Cheap organic food is still difficult to come by.
- The black lettering really stands out on that orange background.
- The President says she is optimistic that an agreement can be worked out soon.
- We don’t have any choice, only run in opposite directions.
- In deciding on an operatic career she hitched her wagon to a star.
- He was very open-minded about other people’s work.
- Martha’s a very open-handed, generous person.
- Girls do better on open-ended tasks that require them to think for themselves.
- Training is part of our ongoing career development program.
- This is the most onerous task I have ever undertaken.
- She has always been an omnivorous reader.
- There were ominous dark clouds gathering overhead.
- He had old-fashioned ideas and was easily shocked.
- Youth is a blunder; manhood a struggle, old age a regret.
- The defensive team nearly equipoised the offensive team.
Learn more with words that start with O in English.
Adjectives that Start with O Infographic
