5 Letter Words That Start With O

order

Noun : (countable) Arrangement, disposition, or sequence.

Noun : (countable) A position in an arrangement, disposition, or sequence.

Noun : (uncountable) The state of being well arranged.

other

Adjective : See other (determiner) below.

Adjective : Second.

Adjective : Alien.

organ

Noun : The larger part of an organism, composed of tissues that perform similar functions.

Noun : (by extension) A body of an organization dedicated to the performing of certain functions.

Noun : (music) A musical instrument that has multiple pipes which play when a key is pressed (the pipe organ), or an electronic instrument designed to replicate such.

offer

Noun : A proposal that has been made.

Noun : Something put forth, bid, proffered or tendered.

Noun : (law) An invitation to enter into a binding contract communicated to another party which contains terms sufficiently definite to create an enforceable contract if the other party accepts the invitation.

ocean

Noun : (countable) One of the large bodies of water separating the continents.

Noun : (uncountable) Water belonging to an ocean.

Noun : (figuratively) An immense expanse; any vast space or quantity without apparent limits.

overt

Adjective : Open and not concealed or secret.

Adjective : (heraldry) Disclosed.

Noun : (Scientology) An action or condition said to be detrimental to one’s own survival and thus unethical; the consciousness of such behaviour.

ought

Verb : (auxiliary) Indicating duty or obligation.

Verb : (auxiliary) Indicating advisability or prudence.

Verb : (auxiliary) Indicating desirability.

often

Verb : Frequently; many times.

Adjective : (archaic) Frequent.

occur

Verb : (intransitive) To happen or take place.

Verb : (intransitive) To present or offer itself.

Verb : (impersonal) To come or be presented to the mind; to suggest itself.

ombre

Noun : A Spanish card game, usually played by three people. It involves forty cards, omitting the ranks of 8, 9 and 10.

Noun : (archaic) A large Mediterranean food fish, Umbrina cirrosa

Noun : (colors) A gradual blending of one color hue to another, usually moving tints and shades from light to dark.

opine

Verb : (intransitive, transitive) To express an opinion; to state as an opinion; to suppose, consider (that).

Verb : (intransitive) To give one's formal opinion (on or upon something).

Verb : (intransitive, transitive) to suppose, consider as correct, or entertain, an opinion.

opera

Noun : (music) A theatrical work, combining drama, music, song and sometimes dance.

Noun : (music) The score for such a work.

Noun : A building designed for the performance of such works; an opera house.

orbit

Noun : The curved path of one object around a point or another body.

Noun : (astronomy) An elliptical movement of an object about a celestial object or Lagrange point, especially a periodic elliptical revolution.

Noun : One complete circuit round an orbited body.

orris

Noun : Any of several irises that have a fragrant root, especially Iris × germanica.

Noun : The fragrant root of such an iris.

Noun : A type of gold or silver lace.

onset

Noun : (archaic) An attack; an assault especially of an army.

Noun : (medicine) The initial phase of a disease or condition, in which symptoms first become apparent.

Noun : (phonology) The initial portion of a syllable, preceding the syllable nucleus.

oasis

Noun : A spring of fresh water, surrounded by a fertile region of vegetation, in a desert.

Noun : (figuratively) A quiet, peaceful place or situation separated from surrounding noise or bustle.

Noun : A census-designated place in Riverside County, California, United States.

omega

Noun : The twenty-fourth letter of the Classical and the Modern Greek alphabet, and the twenty-eighth letter of the Old and the Ancient Greek alphabet, i.e. the last letter of every Greek alphabet. Uppercase version: Ω; lowercase: ω.

Noun : (often capitalized) The end; the final, last or ultimate in a sequence.

Noun : (physics) Angular velocity; symbol: ω.

onion

Noun : A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice.

Noun : The bulb of such a plant.

Noun : A plant of the genus Allium as a whole.

outre

Adjective : Alternative spelling of outré [Beyond what is customary or proper; extravagant.]

ounce

Noun : An avoirdupois ounce, weighing ¹⁄₁₆ of an avoirdupois pound, or 28.3495 grams.

Noun : A troy ounce, weighing ¹⁄₁₂ of a troy pound, or 480 grains, or 31.1035 grams.

Noun : A US fluid ounce, with a volume of ¹⁄₁₆ of a US pint, 1.8047 cubic inches or 29.5735 millilitres.

olive

Noun : A tree, Olea europaea, cultivated since ancient times in the Mediterranean for its fruit and the oil obtained from it.

Noun : The small oval fruit of this tree, eaten ripe (usually black) or unripe (usually green).

Noun : The wood of the olive tree.

oomph

Noun : (informal, uncountable) Strength, power, passion or effectiveness; clout.

Noun : (informal, uncountable) Sex appeal.

Noun : (countable) A bassy grunting or thudding sound.

outdo

Verb : (transitive) To excel; go beyond in performance; surpass.

oxide

Noun : (chemistry) A binary chemical compound of oxygen with another chemical element.

okapi

Noun : A large ruminant mammal, Okapia johnstoni, found in the rainforests of the Congo, related to the giraffe but with a much shorter neck, a reddish-brown coat, and zebra-like stripes on its hindquarters.

offal

Noun : The internal organs of an animal, used as food.

Noun : A by-product of the grain milling process, which may include bran, husks, etc.

Noun : A dead body; carrion.

ochre

Noun : A clay earth pigment containing silica, aluminum and ferric oxide

Noun : A somewhat dark yellowish orange colour

Noun : (molecular biology, colloquial) The stop codon sequence "UAA."

osier

Noun : A kind of willow, Salix viminalis, growing in wet places in Europe and Asia, and introduced into North America. It is considered the best of the willows for wickerwork.

Noun : (loosely) Any kind of willow.

Noun : One of the long, pliable twigs of this plant, or of other similar plants.

ovate

Adjective : Shaped like an egg.

Adjective : (botany, of leaves) With the broadest extremity near the base.

Noun : (archaeology) An egg-shaped hand axe.

orate

Verb : To speak formally; to give a speech.

Verb : To speak passionately; to preach for or against something.

Adjective : Competent in oracy; having good speaking skills.

otter

Noun : An aquatic or marine carnivorous mammal in the subfamily Lutrinae of the family Mustelidae, which also includes weasels, polecats, badgers, and others.

Noun : (gay slang) A hairy man with a slender physique, in contrast with a bear, who is more thickset.

Noun : (obsolete) annatto (dye)

owner

Noun : One who owns something.

Noun : (nautical, slang) The captain of a ship.

odium

Noun : Hatred; dislike.

Noun : The quality that provokes hatred; offensiveness.

ovine

Adjective : (comparable) Of, being, pertaining to, or resembling a sheep; also, (not comparable) of an animal: from the genus Ovis.

Adjective : (comparable, figuratively) Resembling a sheep in character; acquiescent, easily influenced, passive, or willing to follow a leader blindly.

Noun : An animal from the genus Ovis; a sheep.

orion

Noun : (Greek mythology) A giant-hunter, pursuer of the Pleiades and lover of Eos, and killed by Artemis.

Noun : (astronomy) A constellation on the celestial equator close to Gemini and Taurus, containing the stars Betelgeuse and Rigel.

Noun : A surname.

ovolo

Noun : (architecture) A classical convex moulding carved with an egg and dart ornament.

oriel

Noun : (architecture) A large polygonal recess in a building, such as a bay window, forming a protrusion on the outer wall.

Noun : (obsolete) A small apartment next to a hall, used for dining.

Noun : (Oxford University, informal) Ellipsis of Oriel College, Oxford..

optic

Adjective : (relational) Of, or relating to the eye or to vision.

Adjective : (optics, relational) Of, or relating to optics or optical instruments.

Noun : (archaic, humorous) An eye.

osage

Noun : Of, from, or pertaining to the Osage nation or tribe.

Noun : Of, from, or pertaining to the Osage language.

Noun : A village in Saskatchewan, Canada.

ogive

Noun : (statistics) The curve of a cumulative distribution function.

Noun : (architecture) A Gothic pointed arch, or a rib of a Gothic vault.

Noun : (weaponry, ballistics) The pointed, curved nose of a bullet, missile, or rocket.

ollie

Noun : (skateboarding, surfing, snowboarding) An aerial maneuver in which one catches air by leaping off the ground with the skateboard and into the air.

Verb : (intransitive) To perform an ollie.

Noun : A diminutive of the male given name Oliver.

obese

Adjective : Extremely overweight, especially: weighing more than 20% (for men) or 25% (for women) over their conventionally ideal weight determined by height and build; or, having a body mass index over 30 kg/m².

Noun : A person who is obese.

ozone

Noun : (inorganic chemistry) An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge.

Noun : (Britain, informal) Fresh air, especially that breathed at the seaside and smelling of seaweed.

Verb : (transitive) To treat with ozone.

oribi

Noun : (South Africa) Ourebia ourebi, a species of antelope.

opium

Noun : (uncountable) A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of the opium poppy, Papaver somniferum, and containing alkaloids such as morphine, codeine, and papaverine.

Noun : (by extension, countable) Anything that numbs or stupefies.

oscar

Noun : A male given name from Irish or Old English.

Noun : A surname from Irish [in turn originating as a patronymic], a rare anglicization of Mac Oscair (“son of Oscar”) (McCusker).

Noun : A locale in the United States.

odeon

Noun : An ancient Greek or Roman building used for performances of music and poetry.

Noun : A theatre or concert hall.

Noun : Any of several ancient Greek and Roman buildings built for musical activities

obeli

Noun : (historical) A symbol resembling a horizontal line (–), sometimes together with one or two dots (for example, ⨪ or ÷), which was used in ancient manuscripts and texts to mark a word or passage as doubtful or spurious, or redundant; an obelisk.

Noun : A dagger symbol (†), which is used in printed matter as a reference mark to refer the reader to a footnote, marginal note, etc.; beside a person's name to indicate that the person is deceased; or beside a date to indicate that it is a person's death date; an obelisk.

ocher

Noun : Alternative spelling of ochre [A clay earth pigment containing silica, aluminum and ferric oxide]

Verb : Alternative spelling of ochre [To cover or tint with ochre.]

odour

Noun : (British spelling) Alternative form of odor [Any smell, whether fragrant or offensive.]

ortho

Noun : (countable, chemistry) An isomer of a benzene derivative having two substituents adjacent on the ring.

Noun : (countable, astronomy) A certain type of flat eyepiece.

Noun : (countable, photography, dated) An orthochromatic plate.

ousel

Noun : Alternative form of ouzel [(now regional) A Eurasian blackbird (Turdus merula).]

octet

Noun : A group or set of eight of something.

Noun : (music) A group of eight musicians performing together.

Noun : (music) A composition for such a group of musicians.

ology

Noun : (colloquial) Any branch of learning, especially one ending in “-logy”.

orlop

Noun : (nautical) The platform over the hold of a ship that makes up the fourth or lowest deck, hence in full called orlop deck, especially of a warship.

ovule

Noun : (botany) The structure in a plant that develops into a seed after fertilization; the megasporangium of a seed plant with its enclosing integuments.

Noun : (zoology) An immature ovum in mammals.

odeum

Noun : Alternative form of odeon [An ancient Greek or Roman building used for performances of music and poetry.]

outer

Adjective : Outside; external.

Adjective : Farther from the centre of the inside.

Noun : An outer part.

obeah

Noun : A form of folk magic, medicine or witchcraft originating in Africa and practised in parts of the Caribbean.

Noun : A magician or witch doctor of the magic craft.

Noun : A spell performed in the practice of the magic craft; an item associated with such a spell.

op-ed

Noun : A newspaper page containing signed articles by commentators expressing viewpoints that may not agree with those espoused by the editorial board, traditionally printed opposite the editorial page.

Adjective : Of or being a newspaper page, usually opposite the editorial page, that features signed articles expressing personal viewpoints.

Adjective : Of an article, written in a style suitable for publication as an op-ed.

owing

Adjective : Still to be paid; owed as a debt.

oread

Noun : (Greek mythology) A mountain nymph; an anthropomorphic appearance of the spirit of a mountain.

ostia

Noun : (historical) A port and town on the Tiber in Italia, Roman Empire, the harbour of ancient Rome

Noun : A modern refounding of the ancient town at the mouth of the Tiber, now a neighbourhood of Rome, Italy

ouchy

Adjective : (colloquial) Painful, hurtful; that is expressed by the word ouch.

Noun : A lakeside resort near Lausanne, Vaud canton, Switzerland.

oakum

Noun : Coarse fibres separated by hackling from flax or hemp when preparing the latter for spinning.

Noun : Fibres chiefly obtained by untwisting old rope, which are used to caulk or pack gaps between boards of wooden ships and joints in masonry and plumbing, and sometimes for dressing wounds.

ovoid

Adjective : Shaped like an oval.

Adjective : Egg-shaped; shaped like an oval, but more tapered at one end; ovate.

Noun : Something that is oval in shape.

ouija

Noun : (countable) A board, having letters of the alphabet and the words yes and no; used with a planchette during a seance to "communicate" with spirits.

Noun : (uncountable) The use of such a board to attempt to communicate with spirits.

Noun : Alternative form of Ouija [(countable) A board, having letters of the alphabet and the words yes and no; used with a planchette during a seance to "communicate" with spirits.]

oding

Noun : (now archaic, regional) (Euphemistic form of) God.

Noun : (pseudoscience, historical, also attributive) A hypothetical force or natural power, which was supposed by Carl Reichenbach and others to inhere in certain people and produce phenomena such as animal magnetism and mesmerism, and to be developed by various agencies, as by chemical or vital action, heat, light, magnets, etc.

Verb : (informal) To take an overdose of a drug, to overdose.

orvis

Noun : A surname.

octal

Noun : (arithmetic, computing, uncountable) The number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7.

Noun : (arithmetic, computing, countable) A digit or value in the octal number system.

Adjective : (arithmetic, computing) Concerning numbers expressed in octal or mathematical calculations performed using octal.

omaha

Noun : A member of a tribe of Native Americans currently residing in northeastern Nebraska and western Iowa.

Noun : The largest city in Nebraska, United States, and the county seat of Douglas County.

Noun : The language spoken by the Omaha tribe.

ornis

Noun : (formal) A bird.

Noun : The birds collectively of a region; avifauna.

orang

Noun : An orangutan.

ormer

Noun : An abalone or sea-ear, particularly Haliotis tuberculata, common in the Channel Islands.

ogham

Noun : An ancient Celtic alphabet historically used to write Primitive Irish.

Noun : A single character in this alphabet.

Noun : Alternative form of Ogham [An ancient Celtic alphabet historically used to write Primitive Irish.]

ouzel

Noun : (now regional) A Eurasian blackbird (Turdus merula).

Noun : (chiefly Canada, US) A water ouzel, an aquatic perching bird (Cinclus mexicanus).

owlet

Noun : A young owl; owling.

Noun : One of a species of small owls, such as Athene noctua.

Noun : An owlet moth.

oddly

Verb : In a peculiar manner; strangely; unusually.

Verb : In a manner measured by an odd number.

osaka

Noun : The capital city of Osaka Prefecture, Japan.

Noun : A prefecture on the island of Honshū, Japan.

octad

Noun : A group of eight things.

Noun : (historical) hundred million = myriad myriad; 100,000,000 = 10⁸

omani

Noun : A person from Oman or of Omani descent.

Adjective : Of, from, or pertaining to Oman or the Omani people.

oxeye

Noun : Several daisy-like flowers in various genera,

Noun : Heliopsis spp.

Noun : Heteranthemis viscidehirta

ovary

Noun : (anatomy) A female reproductive organ, often paired, that produces ova and in mammals secretes the hormones estrogen and progesterone.

Noun : (botany) The lower part of a pistil or carpel that bears ovules and ripens into fruit.

out of

Verb : (often informal) expression of how distant a person or an object is.

osric

Noun : OSRIC, short for Old School Reference and Index Compilation, is a fantasy role-playing game system.

owned

Adjective : having an owner; often used in combinatio

ohmic

Adjective : Of or relating to, or measured in, ohms.

Adjective : That obeys Ohm's law

owens

Noun : A surname transferred from the given name.

orlon

Noun : a synthetic fibre used in yarn and knitwear

older

Adjective : elderly

Noun : A surname.

oldie

Noun : (informal) Something or someone old.

Noun : (informal) A song or record from a previous era.

Noun : (informal, in the plural) The genre of music composed of popular music from previous eras.

optus

Noun : Singtel Optus Pty Limited (commonly referred to as Optus) is an Australian telecommunications company headquartered in Macquarie Park, New South Wales, Australia.

Noun : This is a list of the satellites operated by Optus, an Australian telecommunications company.

oxlip

Noun : A plant of species Primula elatior, similar to cowslip but with larger, pale yellow flowers.

oaker

Noun : Obsolete form of ochre. [A clay earth pigment containing silica, aluminum and ferric oxide]

oxbow

Noun : A U-shaped piece of wood used as a collar for an ox, the upper parts which are fastened to its yoke.

Noun : A meander in a river; the land enclosed by such a loop.

Noun : A town in North Dakota.

orpin

Noun : Alternative form of orpine (“the plant or the pigment”) [Any of several temperate succulent plants of the family Crassulaceae, that have clusters of purple flowers, especially Hylotelephium telephium.]

olmec

Noun : A member of an ancient pre-Columbian people living in the tropical lowlands of south-central Mexico, in what are roughly the modern-day states of Veracruz and Tabasco.

oboli

oflag

Noun : (historical) A German prisoner-of-war camp for officers only.

oligo

Noun : (biochemistry) An oligonucleotide.

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