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An extended exclamation expressing wonder, surprise, admiration, or delight.

An exclamation used to acknowledge a minor mistake, accident, or error.

(informal) Short for "operation," especially a military or surgical operation.

Allowing access, passage, or view; not closed or blocked.

Past tense and past participle of open; moved a door, lid, or barrier to allow access.

A device or tool used for opening something, especially bottles or cans.

(noun) A gap, hole, or space through which something can pass.

Without concealment or secrecy; in a way that is visible or known to everyone.

Third person singular present tense of "open"; to move something so that it is no longer closed.

A dramatic work set to music, in which singers and musicians perform a theatrical story.

To function or work in a proper or effective way.

Past tense and past participle of "operate"; functioned or worked.

Third person singular present tense of "operate"; functions or works.

(adjective) Relating to the functioning or management of something.

An act or process of operating; functioning.

Ready for use; functioning properly.

Plural of operation; the activities involved in running a business or organization.

(noun) A worker, especially a skilled worker in a manufacturing industry.

Plural of operative; workers, especially skilled workers in manufacturing.

A person who operates equipment, machinery, or a system.

A personal view, belief, or judgment about something, not necessarily based on facts.

Plural of opinion; personal views, beliefs, or judgments.

A highly addictive narcotic drug derived from the juice of the opium poppy, used historically as a painkiller and sedative.

A Korean term used by females to address or refer to an older brother or an older male friend/boyfriend.

A person who competes against or fights another in a contest, game, or argument.

Plural of opponent; people who compete against others in contests or games.

Plural of opportunity; favorable circumstances or situations that make it possible to do something.

A favorable time or set of circumstances for doing something.

To actively resist or fight against something or someone.

(adjective) Being against something; in disagreement or conflict.

(adjective) In conflict or competition with another.

(adjective) Completely different; as different as possible.

Resistance or dissent to a plan, idea, or action.

Prolonged cruel or unjust treatment or control, especially by those in authority.

A female given name, most famously associated with Oprah Winfrey, an American media executive, talk show host, actress, and philanthropist.

(informal) Short for "operations," especially in military, business, or technology contexts.

A tendency to expect the best possible outcome or to focus on the most positive aspects of a situation.

Hopeful and confident about the future or the success of something.

A thing that is or may be chosen; a choice.

Plural of option; choices or alternatives available in a particular situation.

Used to link alternatives.

(in ancient Greece) A priest or priestess who communicated divine prophecies from the gods.

(adjective) Relating to or involving the mouth.

(noun) A round citrus fruit with thick reddish-yellow skin and sweet, juicy flesh.

Plural of *orange*: round citrus fruits with a tough bright reddish-yellow rind and juicy sweet flesh.

A spherical body; a globe or ball.

(noun) The curved path of a celestial object or spacecraft around a star, planet, or moon.

A piece of land planted with fruit trees.

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

A plant of a large family distinguished by complex flowers with a labellum (lip) and often a spur, typically having showy or unusual-colored blooms.