Words That Start With

O

English words beginning with “O” — sorted by frequency

✦199 words found

🟩6 Wordle words

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🟩 5-Letter Words Starting With O

6 Wordle words

These are valid 5-letter words — exactly the format Wordle uses every day.

ORDER OVERT OBEAH OTHER ORIEL OPTIC

🎯 4-Letter Words Starting With O

4 words

Useful for Scrabble, crossword fill-ins, and short word puzzles.

OPEN OPUS OBEY ORGY

All Words Starting With O

199 words — most common first

Sorted by how frequently each word appears in written English.

Word	Letters	Syllables	Type	Definition
otiose	6	3		Having no reason for being (raison d’être); having no point, reason, or purpose.
obscure	7	2	verb	Difficult to understand; abstruse.
ostentatious	12	4		Intended to attract notice.
ostensible	10	4		Appearing as such; being such in appearance; professed, supposed (rather than demonstrably true or real).
obscene	7	2	verb	Offensive to standards of decency or morality.
obstinate	9	3		Stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent.
ostensibly	10	4		(modal) Seemingly, apparently, on the surface; supposedly, according to representations or implications made by someone (especially when their motives are suspected by others).
objective	9	3	noun	Not influenced by the strong emotions or prejudices.
obtuse	6	2	verb	Intellectually dull or dim-witted.
optimal	7	3	noun	The best, most favourable or desirable, especially under some restriction.
orgulous	8	3		(literary, archaic) Arrogant, haughty, proud.
observe	7	2	verb	(transitive) To notice or view, especially carefully or with attention to detail.
order	5	2	noun	(countable) A command.
overt	5	2	noun	Open and not concealed or secret.
opulent	7	3		Rich, sumptuous and extravagant.
opaque	6	2	noun	Allowing little light to pass through, not translucent or transparent.
oblivious	9	4		(usually with to or of) Lacking awareness; unmindful; unaware, unconscious of.
obsolete	8	3	noun	(of words, equipment, etc.) No longer in use; gone into disuse; disused or neglected (often in favour of something newer).
oblique	7	2	noun	Not straightforward; indirect; by implication; (sometimes even) obscure, ambiguous, or confusing.
obdurate	8	3	verb	Stubbornly persistent, generally in wrongdoing; refusing to reform or repent.
obviate	7	3	verb	(transitive) To anticipate and prevent or bypass (something which would otherwise have been necessary or required); to render (something) unnecessary.
obliged	7	2		Under an obligation to do something.
obsequious	10	4		Excessively eager and attentive to please or to obey instructions; fawning, subservient, servile.
operative	9	4	noun	Functional, in working order.
obvious	7	3		Easily discovered, seen, or understood; self-explanatory.
oblivion	8	4	noun	The state of forgetting completely, of being oblivious, unconscious, unaware, as when sleeping, drunk, or dead.
oblation	8	3	noun	The offering of worship, thanks etc. to a deity.
opulence	8	3	noun	Ostentatious display of wealth and luxury; plushness.
open	4	2	verb	(usually not comparable) Physically unobstructed, uncovered, etc.
overcast	8	3	noun	Covered with clouds; overshadowed; darkened; (meteorology) more than 90% covered by clouds.
oversight	9	3	noun	Supervision or management.
ophidian	8	4	noun	Of or pertaining to the suborder Serpentes; of, related to, or characteristic of a snake or serpent.
oscillate	9	3	verb	(intransitive) To swing back and forth, especially if with a regular rhythm.
ordinary	8	4	noun	A person with authority; authority, ordinance.
oracle	6	3	noun	A person such as a priest through whom the deity is supposed to respond with prophecy or advice.
opined	6	2	verb	(intransitive, transitive) To express an opinion; to state as an opinion; to suppose, consider (that).
organization	12	5	noun	(countable) A group of people or other legal entities with an explicit purpose and written rules.
obliterate	10	4	verb	(transitive) To destroy (someone or something) completely, leaving no trace; to annihilate, to wipe out.
opposition	10	4	noun	The action of opposing or of being in conflict.
overlook	8	3	verb	To fail to notice; to look over and beyond (anything) without seeing it.
orphic	6	2	noun	Having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding; mystic.
obtrusive	9	3		(figurative) Of a thing: noticeable or prominent, especially in a displeasing way.
overlooked	10	3		Missed, unnoticed.
original	8	4	noun	(not comparable) Newly created.
obtain	6	2	verb	(transitive) To get hold of; to gain possession of, to procure; to acquire, in any way.
obstreperous	12	4		Attended by, or making, a loud and tumultuous noise; boisterous.
oppression	10	3	noun	The exercise of authority or power in a burdensome, cruel, or unjust manner.
optimize	8	3	verb	(transitive) To make (something) optimal.
ornate	6	2	verb	Elaborately ornamented, often to excess.
obeah	5	3	noun	A form of folk magic, medicine or witchcraft originating in Africa and practised in parts of the Caribbean.
overture	8	3	noun	(often in plural) An approach or proposal made to initiate communication, establish a relationship etc.
obsession	9	3	noun	An idea that engenders a compulsive or irrational preoccupation, or the preoccupation thereby engendered.
optimum	7	3	noun	The best or most favorable condition, or the greatest amount or degree possible under specific sets of comparable circumstances.
overwrought	11	3		Excessively nervous, excited, tense, angry, anxious, or upset; overemotional; very uneasy.
opprobrious	11	4		Causing opprobrium; offensive and shameful.
otherworldly	12	4		Of, concerned with, or preoccupied with a world different from the tangible world, especially a fantasy, imaginary, or mystical world.
ostent	6	2	noun	A boastful, ostentatious display or exhibition.
obligation	10	4	noun	A social, legal, or moral requirement, duty, contract, or promise that compels someone to follow or avoid a particular course of action.
obstinacy	9	4	noun	The state, or an act, of stubbornness or doggedness.
obfuscation	11	4	noun	(uncountable) The act or process of obfuscating, or obscuring the perception of something; the concept of concealing the meaning of a communication by making it more confusing and harder to interpret.
obviously	9	4		In an obvious or clearly apparent manner.
orgiast	7	3	noun	One who attends an orgy.
ordinance	9	3	noun	(US) A local law, passed by e.g. a city.
opus	4	2	noun	A work, especially of art.
obfuscate	9	3	verb	To deliberately make more confusing in order to conceal the truth.
oppressive	10	3		Tyrannical or exercising unjust power.
osculate	8	3	verb	(ambitransitive) To kiss.
orison	6	3	noun	A prayer.
optimistic	10	4		Expecting the best in all possible ways.
oppugn	6	2	verb	(transitive, rare) To contradict or controvert; to oppose; to challenge or question the truth or validity of a given statement.
osculation	10	4	noun	The action of kissing.
object	6	2	noun	A thing that has physical existence but is not alive.
origin	6	3	noun	The beginning of something.
operate	7	3	verb	(transitive or intransitive) To perform a work or labour; to exert power or strength, physical or mechanical; to act.
obstruct	8	2	verb	To block or fill (a passage) with obstacles or an obstacle.
opprobrium	10	4	noun	(uncountable) Disgrace or bad reputation arising from exceedingly shameful behaviour; ignominy.
oracular	8	4		Prophetic, foretelling the future.
overwhelming	12	4	noun	Very great or intense.
obstinance	10	3	noun	The characteristic of being obstinate.
orthodox	8	3	noun	Conforming to the accepted, established, or traditional doctrines of a given faith, religion, or ideology.
orator	6	3	noun	A skilled and eloquent public speaker.
ostracize	9	3	verb	(by extension) To exclude a person from a community or from society by not communicating with them or by refusing to acknowledge their presence; to refuse to associate with or talk to; to shun.
oblige	6	2	verb	(transitive, intransitive) To do (someone) a service or favour (hence, originally, creating an obligation).
overcome	8	3	verb	(transitive) To surmount (a physical or abstract obstacle); to prevail over, to get the better of.
obscurity	9	4	noun	The state of being unknown; a thing that is unknown.
overlord	8	3	noun	(typically derogatory) Anyone with overarching power or authority in a given domain.
obliterated	11	5		Destroyed; (loosely) broken beyond repair.
oscitant	8	3		sleepy; drowsy; sluggish; careless
obeast	6	2	noun	(slang, derogatory) A very obese or overweight person.
operation	9	4	noun	(uncountable) The act or process of operating (verb): agency; the exertion of power, physical, mechanical, or moral.
opportunity	11	5	noun	A chance for advancement, progress or profit.
oscillation	11	4	noun	a regular periodic fluctuation in value about some mean
ordeal	6	2	noun	(figuratively) A painful or trying experience.
obstacle	8	3	noun	Something that impedes, stands in the way of, or holds up progress, either physically or figuratively
oppose	6	2	verb	To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against.
overweening	11	4	noun	Unduly confident; arrogant.
orchestrate	11	3	verb	(transitive) To arrange or direct diverse elements to achieve a desired effect
overarching	11	4	noun	(figurative) Dominating or covering something for the most part.
ostracized	10	3		Banished by ostracism.
orient	6	3	noun	(transitive) To build or place (something) so as to face eastward.
ordinal	7	3	noun	An ordinal number such as first, second and third.
overview	8	3	noun	A brief summary, as of a book or a presentation.
orifice	7	3	noun	A mouth or aperture, such as of a tube, pipe, etc.; an opening.
opening	7	3	noun	An act or instance of making or becoming open.
organism	8	4	noun	(biology) A discrete and complete living thing, such as animal, plant, fungus or microorganism.
orgasm	6	3	noun	A rush of sexual excitement; now specifically, the climax or peak of sexual pleasure, which occurs during sexual activity and which in males may include ejaculation and in females vaginal contractions.
opportune	9	3		At a convenient or advantageous time.
ostentation	11	4	noun	Ambitious display; vain show; display intended to excite admiration or applause.
ordained	8	2		Admitted to the ministry of the church.
opacous	7	3		(obsolete) Not allowing the passage of light; opaque.
observation	11	4	noun	The act of observing, and the fact of being observed (see observance)
orderly	7	3	noun	Neat and tidy; possessing order.
ordnance	8	2	noun	Military equipment, especially weapons and ammunition.
oratory	7	4	noun	The art of public speaking, especially in a formal, expressive, or forceful manner.
oration	7	3	noun	A formal, often ceremonial speech.
ordered	7	2		In order, not messy, tidy.
overseer	8	4	noun	One who oversees or supervises.
obligated	9	4		(Canada, US, Scotland) Having an obligation; obliged.
oscillating	11	4		Moving in a repeated back-and-forth motion; coming and going.
opaline	7	3	noun	Resembling opal in having a milky white iridescence.