adverb / adjective
well
WEL/wel/
In a satisfactory or healthy manner or condition.
The repaired bicycle wheel works well, spinning smoothly after adjustment.

Etymology
Old English wel could express abundance or good reason. In the selected sense, the word evaluates how successfully an action is performed, serving as the adverb corresponding to good.
In context
I didn't do very well.
worked very well in the drug economy,
More examples
- I feel well enough to go back to work.
- The interview goes well, and she leaves feeling confident.
- He sleeps better when the room is cool.
Forms
well · better · best
wellness noun — A state of good physical and mental health.
Similar words
- satisfactorily
- Emphasizes meeting expectations rather than being healthy or especially skillful.
- healthy
- Describes good physical condition, not how an action is performed.