(informal) To speak about things rashly or foolishly, when it would be better to stay silent.

A company that sells package holidays.

(finance) Negative operating income.

In operation; that operates. / Involved in an operation.

present participle and gerund of operate

Effectual or important. / Functional, in working order. / Having the power of acting; hence, exerting force, physical or moral; active in the production of effects.

An employee or other worker with some particular function or skill. / A spy, secret agent, or detective. / A participant in an operation.

plural of operation

(UK) Alternative spelling of cooperate

(business, finance) A trading method whereby traders gather in person, often in a pit, and call out to all their desire to buy or sell a quantity at a given price, transactions being consummated when two parties can agree on a price. Most frequently used in securities markets.