operative

An operative is not just working; the word often suggests someone carrying out a task, sometimes one that needs special skill or secrecy. Think of a secret agent in a spy story: that person is an operative working undercover. But the word goes beyond espionage. A clause in a contract is "operative" when it takes effect, meaning it is now active and has legal force. It can also simply mean something is functioning as it should: "The new safety measures are now operative."

The key idea is that it suggests something is in operation, actively doing its job. In a sentence, the "operative word" is the one that matters most in that context. Whether it is a person, a rule, or a key detail, if it is operative, it is the thing making something happen.

The word "operative" has a wide range of meanings, but they all grow out of the idea of being in active working order or carrying out a specific task. At its core, it describes something that functions or is currently in effect. You might say a new law is "operative" once it has taken effect, meaning it now has legal force and applies in real life.

However, "operative" often carries a sense of skill and purpose, especially when referring to a person. As a noun, an "operative" is someone employed to perform a specific task, particularly one requiring specialized knowledge or discretion. This is especially common in intelligence work, where operatives may work undercover or gather information. Historically, the term was also used for industrial workers, especially skilled ones who operated machinery.

The term also appears frequently in legal and formal writing. An "operative clause" in a contract is the part that actually creates the legal obligation or has legal effect, as opposed to the introductory or background language. In a sentence or statement, the "operative word" is the word that has the main force or determines the real meaning.

Etymologically, the word comes from the Latin operari, meaning "to work." This root explains why something "operative" isn't just present—it is actively engaged in producing an effect. So, whether you're describing a functioning law, a skilled agent, or the most important word in a sentence, "operative" signifies something that is not merely existing, but is actively at work.