How do you use well as an adjective?

"Well" can function as an adjective, but it's a bit tricky. It's usually used in a predicative way, meaning it comes *after* a linking verb like "be," "seem," "feel," etc.

Here are some examples:

* "She is well." (This means she's healthy.)

* "The children are well-behaved." (This means they behave well.)

* "The plan is well-thought-out." (This means the plan is thoroughly considered.)

* "I feel well today." (This means I'm feeling healthy today.)

Important note: "Well" as an adjective is not used to describe things that are good or excellent. For that, you would use adverbs like "good" or "excellent".

For example, you would say:

* "That is a good idea." (NOT "That is a well idea.")

In short, "well" as an adjective generally refers to health, condition, or something being done properly.