Discover a diverse list of adjectives starting with the letter “O” to enhance your vocabulary and enrich your descriptions.
- Obedient- Complying or willing to comply with orders or requests.
- Obese- Excessively fat or overweight.
- Objective- Not influenced by personal feelings or opinions.
- Obligatory- Required by a legal or moral obligation.
- Oblique- Not explicit or direct in addressing a point.
- Oblivious- Not aware of or concerned about what is happening around one.
- Obnoxious- Extremely unpleasant.
- Obscene- Offensive or disgusting by accepted standards of morality and decency.
- Obscure- Not discovered or known about; uncertain.
- Obsequious- Obedient or attentive to an excessive degree.
- Observant- Quick to notice things.
- Obsolete- No longer produced or used; out of date.
- Obstinate- Stubbornly refusing to change one’s opinion or course of action.
- Obstructive- Causing or tending to cause obstruction.
- Obtuse- Annoyingly insensitive or slow to understand.
- Occasional- Occurring, appearing, or done infrequently and irregularly.
- Occupational- Relating to one’s job or profession.
- Oceanic- Relating to or situated in the ocean.
- Odd- Different from what is usual or expected; strange.
- Odious- Extremely unpleasant; repulsive.
- Offbeat- Unconventional and slightly strange.
- Offensive- Causing someone to feel resentful, upset, or annoyed.
- Offhand- Ungraciously nonchalant or cool in manner.
- Official- Relating to an authority or public body and its activities and responsibilities.
- Oily- Containing oil; excessively smooth or suave.
- Ominous- Giving the worrying impression that something bad is going to happen.
- One- dimensional** – Lacking depth or complexity.
- Opaque- Not able to be seen through; not transparent.
- Open- Allowing access or passage; not closed or blocked up.
- Open- minded** – Willing to consider new ideas.
- Operatic- Extravagant, theatrical, or dramatic.
- Opinionated- Conceitedly assertive and dogmatic in one’s opinions.
- Opponent- Positioned against or in opposition.
- Opportunistic- Exploiting chances offered by immediate circumstances without regard to a general plan or moral principle.
- Opposite- Radically different or contrary.
- Oppressive- Unjustly inflicting hardship and constraint.
- Optimal- Best or most favorable.
- Optimistic- Hopeful and confident about the future.
- Optional- Available to be chosen but not obligatory.
- Opulent- Ostentatiously rich and luxurious.
- Oral- Spoken rather than written.
- Orange- Of a color intermediate between red and yellow.
- Oratorical- Relating to the art or practice of public speaking.
- Orderly- Neatly and methodically arranged.
- Ordinary- With no special or distinctive features; normal.
- Organic- Relating to or derived from living matter; free from chemicals.
- Organizational- Relating to the structure or arranging of activities.
- Original- Present or existing from the beginning; first or earliest.
- Ornamental- Serving or intended as an ornament; decorative.
- Ornate- Elaborately or highly decorated.
- Orthodox- Conforming to what is traditionally accepted as right or true.
- Oscillating- Moving back and forth at a regular speed.
- Ostentatious- Characterized by vulgar or pretentious display.
- Otherworldly- Relating to an imaginary or spiritual world.
- Outgoing- Friendly and socially confident.
- Outlandish- Looking or sounding bizarre or unfamiliar.
- Outrageous- Shockingly bad or excessive.
- Outspoken- Frank in stating one’s opinions, especially if they are critical or controversial.
- Outstanding- Exceptionally good.
- Oval- Shaped like an elongated circle.
- Overbearing- Unpleasantly overpowering.
- Overconfident- Excessively confident.
- Overjoyed- Extremely happy.
- Overloaded- Loaded with too much.
- Overpowering- Overwhelming or irresistible in strength or magnitude.
- Oversized- Larger than the usual size.
- Overwhelmed- Burdened with too much to cope with.
- Overworked- Having worked too hard or too long.
- Ovoid- Egg-shaped.
- Oxidized- Chemically combined with oxygen.
- Oxygenated- Supplied, treated, or enriched with oxygen.
- Oyster- colored** – Of a pale greyish-white color, resembling the color of oyster shells.