English words starting with O

Of a color that is a blend of orange and red; reddish-orange.

Of a color intermediate between orange and yellow.

somewhat orange in colour; having a tint or shade of orange

a large ape with long arms and reddish-brown hair, found in the rainforests of borneo and sumatra.

A formal speech, especially one given on a ceremonial occasion.

a person who makes formal speeches in public, especially one who is skilled at this

relating to the art or practice of public speaking

A large-scale musical work for orchestra and voices, typically on a sacred theme, performed without costumes, scenery, or action.

The art of public speaking, especially in a formal and eloquent manner.

a spherical object or shape; a globe

the curved path of a celestial object or spacecraft around a star, planet, or moon

Relating to an orbit or orbits.

A spacecraft designed to orbit a planet or moon without landing on it.

moving in a curved path, usually in a circle or ellipse, around a central object, especially a celestial body like a planet or star.

a large black and white predatory marine mammal of the dolphin family, found in all the world's oceans; a killer whale.

An area of land where fruit trees are grown.

A person who owns or manages an orchard.

A large group of musicians who play together on various instruments, typically including strings, woodwind, brass, and percussion.

relating to or written for an orchestra

To arrange or organize a complex event or situation carefully and sometimes secretly, in order to achieve a desired result.

Carefully and deliberately arranged or planned to achieve a specific effect.

The arrangement or composition of music for performance by an orchestra.

A person who arranges or directs the various elements of a complex situation or activity to produce a desired result.

A plant with flowers that are often brightly colored and unusually shaped, typically growing in tropical regions.

To officially make someone a priest or religious leader in a ceremony.

Having been officially invested with ministerial or priestly authority.

a very unpleasant and painful or difficult experience.

The arrangement or sequence of people or things in relation to each other.

Arranged or organized in a neat, systematic, or logical way.

the action or process of placing an order for something

The quality or state of being neat, tidy, and well-organized.

arranged or organized in a neat, tidy, or logical way

Relating to a position in a numbered series or order.

An authoritative order or decree, especially one made by a government or ruler.

in the way that is usual or normal; most of the time

the quality of being ordinary, common, or unremarkable.

Having no special or distinctive features; normal, common, or usual.

Having an appearance that is not attractive or unusual; plain or unremarkable.

The act or ceremony of making someone a priest or minister in a Christian church.

A person who ordains or confers holy orders; an ordaining prelate.

Military weapons, ammunition, and equipment.

A term used in historical contexts, particularly in ancient Rome, to refer to a social class or order, such as the senatorial or equestrian order.

Relating to or denoting the second period of the Paleozoic era, between the Cambrian and Silurian periods.

A naturally occurring solid material from which a valuable metal or mineral can be extracted.

A herb with leaves that are used in cooking to add flavor, especially in Italian and Greek food.

Of or relating to the US state of Oregon.

A part of the body of an animal or plant that performs a particular job.

A fine, stiff, transparent muslin fabric, often used for dresses and trimmings.

A specialized subunit within a cell that has a specific function, analogous to an organ in a body.

Relating to or derived from living matter.

in a way that is related to or produced by living things

a group of people who work together in a structured way for a shared purpose

relating to the way the different parts of something are arranged or connected

To arrange or plan an event or activity.

Arranged or structured in a systematic way.

a person who arranges an event or activity

a living thing, especially one that is too small to be seen without a microscope, or one that has many parts working together as a single whole.

Relating to or characteristic of a complete living organism, as opposed to its individual parts or processes.

Relating to an organism or organisms; having the characteristics of a living organism.

a person who plays the organ, especially in a church or as a profession.

A group of people who work together in a structured way for a shared purpose.

Extending across or involving an entire organization

relating to the way the different parts of something are arranged or connected to work effectively

In a way that relates to the structure or arrangement of the parts of a whole.

To arrange or plan an event, activity, or system.

arranged in a systematic way, especially on a large scale

Criminal activities that are planned and controlled by powerful groups and carried out on a large scale.

a person who makes arrangements for an event or activity.

(present participle) arranging or structuring things systematically and efficiently.

relating to or denoting compounds in which chlorine atoms are attached to carbon atoms, especially those that are harmful to the environment.

Any of a group of organic compounds containing phosphorus, many of which are used as pesticides and some as nerve agents.

a thin, stiff, transparent fabric made of silk or a similar synthetic material, used especially for making formal dresses and curtains.

The moment of greatest pleasure and excitement during sexual activity.

Relating to, characteristic of, or producing an orgasm.

involving or characteristic of wild, uncontrolled, and excessive activity, especially of a sexual or drunken nature.

a wild party with a lot of drinking, sexual activity, etc.

To align or position something relative to the points of a compass or other specific directions.

Relating to the countries of East and Southeast Asia, or their people, languages, or cultures.

The representation of Asia, especially the Middle East, in a stereotyped way that is regarded as embodying a colonialist attitude.

A scholar who studies the languages, cultures, or societies of the countries of Asia, especially Eastern Asia.

To make someone familiar with a new place or situation.

The act of orienting or the state of being oriented; the determination of one's position in relation to one's surroundings.

Directed towards or interested in a particular thing or purpose.

To take part in the sport of orienteering, navigating across rough country with a map and compass.

a competitive sport in which participants use a map and compass to navigate between checkpoints in diverse and usually unfamiliar terrain.

To align or position something relative to the points of a compass or other specified directions.

An opening or hole, especially one in the body, such as a mouth or nostril.

The Japanese art of folding paper into decorative shapes and figures.

the point or place where something begins, arises, or is derived

existing from the beginning; first or earliest

A method of interpreting a text (especially the U.S. Constitution) that seeks to understand its meaning as it was originally intended by its authors.

The quality of being new and interesting in a way that is different from anything that has existed before.

in the beginning; when something first existed or happened

Relating to or serving as the origin or source of something; original.

to begin to exist or appear for the first time; to have a specified starting point

(of something) having a specified beginning or source; coming from a particular place or person.

The act or process of beginning or creating something; the point at which something starts.

A person who creates or initiates something new.

A brightly colored songbird of the Old World or the New World, typically having yellow and black plumage in the male.

A gold-colored alloy of copper, zinc, and sometimes tin, used in decoration and for making ornaments and furniture mounts.

An object that is used to make something look more attractive but is usually not necessary.

serving or intended as an ornament; decorative.

The use of objects, patterns, etc. to decorate something and make it look more attractive.

Decorated with added items to make something look more attractive.

Made in an intricate shape or decorated with complex patterns.

In a manner that is elaborately or excessively decorated.

the quality or state of being bad-tempered, difficult to deal with, and likely to argue or complain

Bad-tempered, difficult to deal with, and often stubborn.

Relating to the scientific study of birds.

A person who studies or is an expert in the branch of zoology that deals with birds.

The scientific study of birds.

Relating to mountains, especially in relation to their physical geography.

Relating to or located in the part of the throat at the back of the mouth, including the back of the tongue, the soft palate, the side and back walls of the throat, and the tonsils.

The part of the pharynx that lies at the back of the mouth, behind the oral cavity.

(of a person's voice) rich, full, and clear.

A child whose parents are dead.

a home for children whose parents are dead or unable to care for them

(of a child) having lost both parents or, more broadly, one parent.

Relating to or characteristic of the legendary poet and musician Orpheus or the mystical, enchanting qualities associated with him.

the treatment of irregularities in the teeth and jaws, especially using braces or other appliances.