Hi Chae, “Decided” as an adjective means clear, definite or unmistakable. An example of which would be “There was a decided improvement in his work performance”, in which “a decided improvement” means a clear or noticeable improvement. “Decisive” is an adjective often used to describe people who are able to make decisions quickly and confidently. Hope this helps!

"Decided" is nearly always a past tense verb. Its use as an adjective is rare. "Decisive" is the popular option for an adjective. As an adjective, not only is "decided" rare, but it also retains part of its past tense implication. So if I say you are a very decided person, I am saying you've made up your mind about a lot of things, you're set in your ways. Wayward and strong-minded with well-established near-immovable beliefs. As an adjective, "decisive" means you tend to make up your mind, you tend to form strong opinions, but this can happen on the fly as you experience things - you can be spontaneously decisive, or quickly decisive - it doesn't imply you've already decided everything.

Decided" and "decisive" are both adjectives but have different meanings: * Decided: Means something is clear, definite, or certain. It often emphasizes that something is clear or beyond doubt. * Example: She has a decided preference for tea over coffee. * Decisive: Refers to the ability to make decisions quickly and effectively, or something that determines the outcome of a situation. * Example: He is a decisive leader who makes quick, confident decisions.

Some comments on "decided": "Decide" means "come to a decision" but it also means "cause to come to a decision". Because of this double meaning, "decided" has great flexibility as an adjective. It can describe something that has been decided (such as a question or an issue), and it can also describe something that has been caused to decide (in other words, convinced) by somebody or something. Examples describing something that has been decided: "The issue has already been decided. It is now a decided issue." "Our plan for tomorrow is decided. The decided plan is to go skiing." "We have picked a new color for the house. The decided color is blue." Examples describing something that has been caused to decide: "You don't need to convince her. She is decided. We only need to convince the undecided." "The convenience of the Italian stovetop coffee maker decided me to drink expresso every day. I am now decided on the issue of what kind of coffee to drink."