Adjectives That Start With O

Adjective meaning is to serve the sense of modifying nouns or pronouns. They describe the qualities of someone or something independently or in connection to something else. Adjective examples are: The boy is tall and skinny. Jane is more intelligent than her brother. I like old houses. Here we have compiled the complete list of adjectives that start with O.

List of Adjectives that start with O

• Oak
• Oaken
• Obligated
• Obliging
• Oblique
• Obliterable
• Obliterated
• Oblivious
• Oblong
• Obscure
• Observable
• Observant
• Obstinate
• Obstructed
• Obstructive
• Obtainable
• Obtrusive
• Obtuse
• Obvious
• Occasional
• Occipital
• Occluded
• Occupational
• Occupied
• Oceanic
• Ochre
• Octangular
• Octogenarian

Adjectives That Start With the Letter O

• Odious
• Odorless
• Off
• Offbeat
• Offensive
• Offhand
• Official
• Offshore
• Offstage
• Old
• Olden
• Older
• Olfactory
• Olive
• Omissible
• Oncological
• Oncoming
• One
• Ongoing
• Only
• Onshore
• Opaque
• Open
• Opening
• Operant
• Operating
• Opinionated
• Opponent
• Opportunist
• Opposite
• Optic
• Optional
• Oral
• Orange
• Orbital
• Orchestral
• Ordained

Adjective Words That Start With O

• Ordeal
• Ordered
• Ordinary
• Oriental
• Oriented
• Ornate
• Orthopedic
• Orwellian
• Ostensive
• Other
• Out
• Outbound
• Outdoor
• Outgoing
• Outlandish
• Ovation
• Overage
• Overall
• Overcast
• Overcoming
• Overhead
• Overland
• Overly
• Overnight
• Overshot
• Overstuffed
• Overt
• Overweight
• Ovid
• Own
• Owned
• Ownerless
• Oxidized
• Oxlike

List of Adjectives With O

• Outbound
• Only
• Offbeat
• Old
• Oversized
• Oily
• Open-hearted
• Obedient
• Observable
• Operational
• Omnipresent
• Omnipotent
• Objective
• Open-minded
• Opportune
• Ongoing
• Overburdened
• Obese
• Obscene
• Outdated
• Offensive
• Oppressive
• Overactive
• Obsolete
• Opposite
• Obtrusive
• Omniscient
• Outlandish
• Obtuse
• Outmoded
• Officious
• Opinionated
• Overexcited
• Orthodox
• Odd
• Outspoken
• Odorous
• Odoriferous
• Occupied
• Opulent
• Outstanding
• Open
• Ornamental
• Ornate
• Offshore
• Official
• Overpowering
• Overjoyed
• Obsessive
• Offended
• Obstinate
• Optimistic
• Objectionable
• Ominous
• Outrageous
• Obnoxious
• Outgoing
• Odious
• Overfed
• Overweight
• Observant
• Optimum
• Optional
• Original
• Obscure
• Organized
• Oblique
• Overt
• Obliging
• Oblong
• Oblivious
• Overzealous
• Outcast
• Obligated
• Operant
• Opaque
• Optative
• Ottoman
• Oropharyngeal
• Oecumenic
• Overcooked
• Orchestral
• Orthogonal
• Oncoming
• Outraged
• Offish
• Occasional
• Octal
• Oleaceous
• Optical
• Opening
• Oafish
• Odiferous
• Odourless
• Occidental
• OK
• Oxidative
• Organized
• Oaten
• Overfamiliar
• Operating
• Oceanic
• Oversuspicious
• Offstage
• Omnifarious
• Orphaned
• Omnivorous
• Oecumenical
• Operatic
• Occipital
• Overheated
• Onymous
• Orange
• Overshot
• Overbearing
• Obliterate
• Otherwise
• Outermost
• Overwhelmed
• Overwrought
• Operative
• Organic
• Opportunistic
• Oracular
• Overcrowded
• Overproud
• Offhand
• Openmouthed

List of Positive Adjectives Starting With O

• Objective
• Obligated
• Obliging
• Observable
• Observant
• Observational
• Obtainable
• Obvious
• Occurrent
• Official
• OK
• Okay
• Olympian
• Olympic
• Omnibus
• Omnidirectional
• Omnipotent
• Omnipresent
• Omniscient
• On
• One
• Onetime
• Ongoing
• On-going
• Online
• Only
• Opalescent
• Opaline
• Open
• Opened
• Open-ended
• Openhearted
• Opening
• Open-minded
• Operable
• Operant

Negative Adjectives That Start With O

Good Adjectives That Start With the Letter O

• Operating
• Operational
• Operative
• Opportune
• Opportunist
• Opportunistic
• Optimal
• Optimistic
• Optimum
• Optional
• Opulent
• Oracular
• Orchestral
• Ordained
• Ordered
• Orderly
• Organic
• Organized
• Orientated
• Orientating
• Oriented
• Original
• Originative
• Ornamental
• Ornate
• Orotund
• Orthodox
• Over
• Overabundant
• Overall
• Overjoyed
• Overt

Superlative Adjectives That Start With O

• Oddest
• Only
• Outstanding
• Oldest
• Optimal
• One-of-a-kind
• Open-minded
• Obvious
• Overwhelming
• Offbeat
• Outrageous
• Oceanic
• Obsessive
• Organized

Adjectives to describe a person Start With O

• Oafish
• Objectionable
• Obscene
• Odd
• Odious
• Offensive
• OK
• Okay
• Old
• Older
• Oldish
• Open
• Openhanded
• Orderly
• Ordinary
• Outcast
• Outclassed
• Outdated
• Outdoorsy
• Outgoing
• Outlandish
• Outlaw
• Outmoded
• Outrageous
• Outright
• Outspoken
• Outspread
• Outstanding
• Overachiever
• Overbooked
• Overburdened
• Overcharged
• Overcoached
• Overcommitted
• Overcounted
• Overdeveloped
• Overdosed
• Overdressed
• Overeducated
• Overexerted
• Overexerting
• Overexposed
• Overextended
• Overfatigued
• Overfed
• Overfulfilled
• Overinformed
• Overnighter
• Oversteered
• Overweight
• Overwhelming
• Obedient
• Objective
• Obliging
• Obnoxious
• Obsessional
• Obsessive
• Obstinate
• Officious
• Opinionated
• Optimistic
• Organized
• Ostentatious
• Outgoing
• Outraged
• Overachieving
• Overanxious
• Overbearing
• Overconcerned
• Overcritical
• Overemotional
• Overexcited
• Overfocused
• Overindulgent
• Overjoyed
• Overmodest
• Overprotective
• Overwhelmed
• Overwrought
• Overzealous

10 Example Sentences With O Adjectives

We can use adjectives in different positions in a sentence, depending on the specific English grammar rules of the language.

Here are 10 examples of sentences with ‘o’ adjectives:

1. The old house stood abandoned at the end of the street.
2. The orange sunset painted the sky with vibrant hues.
3. The observant detective noticed a small detail that others missed.
4. The optimistic student believed in the power of hard work.
5. The outgoing child made friends easily at the playground.
6. The organized shelves displayed a neat arrangement of books.
7. The original artwork captivated viewers with its unique style.
8. The obedient dog followed every command without hesitation.
9. The outstanding performance received a standing ovation from the audience.
10. The optimistic outlook helped her overcome challenges with a positive mindset.

15 Examples Of Descriptive Adjectives That Start With “O”

Here are descriptive adjectives that start with O

1. Observant: Defined as quick to notice or perceive things.
2. Optimistic: Someone having a positive outlook.
3. Outstanding: Remarkable, or distinguished.
4. Organized: Structured in a systematic and efficient manner.
5. Original: Unique or innovative.
6. Ornate: Often with intricate details.
7. Open-minded: Receptive to new experiences.
8. Obedient: Submissive to authority or following instructions willingly.
9. Overjoyed: Defined as extremely happy or delighted.
10. Observational: Gathering information through careful attention.
11. Optimized: You can define it as modified or adjusted for the best performance or efficiency.
12. Outgoing: Extroverted, or friendly in nature.
13. Organic: Defined as producing something without the use of artificial chemicals.
14. Opaque: Difficult to see through or understand.
15. Overwhelming: Causing strong emotional responses.

FAQs (Frequently Asked Questions)

What are 10 positive adjectives that start with o?

Here are positive adjectives that start with O:

1. Optimistic
2. Open-minded
3. Outstanding
4. Observant
5. Original
6. Optimized
7. Openhearted
8. Overjoyed
9. Obedient
10. Opportunistic

What are adjectives that start with o to describe a person?

Here are adjectives that start with o to describe a person:

1. Observant
2. Outgoing
3. Optimistic
4. Open-minded
5. Openhearted
6. Original
7. Organized
8. Optimized
9. Observational
10. Outstanding

You may also like: 

• Positive Words Start With O
• Descriptive Adjectives Examples
• Golden Angeles University