Whether you’re playing a word-guessing game or studying new English words, the complete list of adjectives starting with an O below will be of great help. We’ve categorized them into different nuances so you can absorb their meaning better. Scroll down to learn more!
In This Article:
Positive Adjectives That Begin With The Letter O
These positive adjectives will add a welcomed embellishment to your compliments or affirmations, highlighting the positive vibe and emotion in your statement.
Adjectives | Meaning |
Obligating | Willing to help or please others. |
One-of-a-kind | Unique and special, unlike any other. |
Open-hearted | Kind, generous, and willing to share emotions. |
On-point | Highly precise |
Outstanding | Exceptionally good; excellent. |
Obedient | Willing to comply with orders or requests. |
Optimal | Best or most effective; ideal. |
Observant | Quick to notice or perceive things. |
Overjoyed | Extremely happy or delighted. |
Outspoken | Frank and unreserved in speech. |
Opulent | Rich and luxurious. |
Ornate | Highly decorated and elaborate. |
Out-of-this-world | Extremely impressive or excellent. |
Otherworldly | Relating to another realm; mystical or strange. |
Original | Fresh and unique in style or idea. |
Orderly | Neatly and methodically arranged. |
Okay | Acceptable or satisfactory. |
Oomph-like | Dynamic, full of enthusiasm and energy. |
Obtainable | Able to be acquired or achieved. |
Omnipotent | Having unlimited power and authority. |
Negative Adjectives Starting In O
Negativity always goes hand in hand with positivity. Sometimes, we need to articulate our negative feelings towards something undesirable or unpleasant, and these adjectives will be powerful tools.
Adjectives | Meaning |
Objectionable | Offensive; causing disapproval. |
Oblivious | Unaware or forgetful of something. |
Obligational | Relating to a duty or commitment. |
Obsessed | Excessively preoccupied with something. |
Obscure | Not well-known; unclear or hard to understand. |
Obsolete | Outdated; no longer in use. |
Off-beat | Unconventional; unusual. |
Obnoxious | Highly offensive or annoying. |
Odious | Extremely unpleasant or repulsive. |
Offensive | Causing someone to feel hurt or upset. |
Overbearing | Domineering; trying to control others. |
Overloaded | Burdened with too much to handle. |
Opinionated | Holding strong beliefs; often unwilling to consider others’ views. |
Outdated | Old-fashioned; no longer current. |
Outlaw | Living outside the law; criminal. |
Overcast | Cloudy or gloomy. |
Overwhelmed | Feeling overpowered; unable to cope. |
Outrageous | Shockingly bad or excessive. |
Onerous | Involving a lot of effort and difficulty. |
Ominous | Giving the impression that something bad is going to happen. |
O Words To Describe Someone
Each person has their own set of traits and characteristics. If you’re struggling to capture someone’s unique personality with words, take a look at the table below to see if anything lights the bulb.
Adjectives | Meaning |
Oafish | Clumsy or unintelligent. |
Optimistic | Hopeful and confident about the future. |
Obeisant | Showing respect or obedience. |
Obese | Extremely overweight. |
Objectionable | Offensive or unpleasant. |
Obligated | Required to do something by law or duty. |
Obscene | Offensive to moral principles; indecent. |
Obstructive | Causing a blockage or hindrance. |
Odd | Unusual or strange. |
Occupied | Busy and active |
Old | Having lived for a long time; not new. |
Old-school | Traditional; not modern. |
Ordinary | Normal; not special or unique. |
Outgoing | Friendly and sociable; enjoys meeting people. |
Overweight | Weighing more than is healthy or normal. |
Overzealous | Excessively enthusiastic or eager. |
On-task | Focused and diligent in completing tasks. |
Overconfident | Excessively confident; having too much confidence. |
Ornery | Bad-tempered and combative; stubborn. |
Orphaned | Having lost both parents or not having any parents. |
Funny Adjectives That Start With An O
Running into something whimsical and funny that cracks you up? Let’s play the role of a comedian and describe it with these adjectives that begin with O! You might tickle others’ funny bones as well!
Adjectives | Meaning |
Obfuscatory | Intended to confuse or obscure. |
Obtuse | Lacking sharpness or quickness of intellect; insensitive. |
Oblong | Having an elongated shape, longer than it is wide. |
Octopean | Relating to or resembling an octopus. |
Octopine | Related to or resembling an octopus. |
Odd-looking | Unusual or strange in appearance. |
Ohmic | Relating to electrical resistance or Ohm’s law. |
Oozy | Slimy or sticky; leaking or exuding moisture. |
Outlandish | Extremely unusual or bizarre. |
Oxymoronic | Containing contradictory or opposite elements. |
Overblown | Excessively inflated or exaggerated. |
Ostentatious | Showy; designed to impress or attract notice. |
Oddball | Unconventional or eccentric; unusual. |
Obstreperous | Noisy and difficult to control. |
Off-kilter | Unbalanced or unconventional; not quite right. |
Cute Adjectives Starting From O
A few adjectives that start with O describe how adorable someone or something is. If you’re stuck with words, let us give you a hand with a comprehensive list below:
Adjectives | Meaning |
Oak | Made of or relating to oak wood or the oak tree. |
Objectional | Worthy of objection; disagreeable or offensive. |
Oceangoing | Designed for travel across the ocean. |
Ocellar | Relating to small, simple eyes, like those in some insects. |
Ochreous | Having a yellowish-brown color, resembling ochre. |
Ogival | Shaped like a pointed arch or a Gothic window. |
Ole | An exclamation used to express approval or encouragement. |
Octahedral | Having eight faces, typically referring to a geometric shape. |
Octagonal | Having eight sides or angles. |
Olive | Of a yellowish-green color, resembling olives. |
Orchestral | Relating to an orchestra or orchestral music. |
Ornamental | Decorative; serving to beautify or embellish. |
Oscine | Relating to songbirds. |
Oval | Having an elongated, rounded shape; egg-shaped. |
Operatic | Relating to or characteristic of opera. |
Olympic | Relating to the Olympic Games; exceptionally high-level. |
Octonary | Relating to or consisting of eight parts. |
Onyx | Made of or resembling the mineral onyx; typically black or banded. |
Organic | Derived from living matter; natural. |
Opalescent | Showing varying colors as an opal does; iridescent. |
Other Common Adjectives Beginning With O
There are thousands of adjectives starting with O, and below are some common words with neutral meanings.
Adjectives | Meaning |
Official | Relating to an authority or public body; formal and authorized. |
Occasional | Happening or appearing at irregular intervals; infrequent. |
Obvious | Easily perceived or understood; clear and apparent. |
Oily | Containing or covered with oil; greasy. |
Opaque | Not transparent or translucent; not allowing light to pass through. |
Opposite | Completely different; situated across from something else. |
On-time | Punctual; occurring at the scheduled time. |
Optic | Relating to the eyes or vision. |
Open-air | Located outside; not enclosed. |
Outsize | Much larger than usual; oversized. |
Optional | Available to be chosen but not obligatory. |
Opportunistic | Taking immediate advantage, often unethically, of any circumstance of possible benefit. |
Operable | Capable of being operated or functioning. |
Omnivorous | Eating both plant and animal substances. |
Oral | Relating to the mouth; spoken rather than written. |
Orange | Having the color of the fruit orange; a bright reddish-yellow color. |
Odorous | Having a strong or distinctive smell, often unpleasant. |
Oversuspicious | Excessively inclined to suspect or mistrust. |
Outdoor | Situated or used outside; in the open air. |
Oncoming | Approaching; coming nearer in time or space. |
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Conclusion
The list of adjectives that start with an O goes on. It’s best to jot down any new words you encounter during learning to ingrain them into your long-term memory. We advise you to put those words in sentences to better understand their usage. Good luck!