Adjunct/ˈædʒʌŋkt/nounAn attachment or addition that makes something better or more useful.She considered the computer an essential adjunct to her studies. Often appears as...valuable adjunct indispensable adjunct Definition 1 of 4Pro Tip 1/2Enhancement Role Used when something adds extra benefits, not just present for show. A well-made sauce is more than a garnish; it's an adjunct to the dish. Pro Tip 2/2Not a Necessity Even though it's useful, an adjunct doesn't mean it's absolutely required. A sunroof is a nice adjunct in a car, but not a must-have.