Meaning of “well” - Learner’s Dictionary

well

adjective [ never before noun ] uk us /wel/ (better, best)

A1 healthy:

to feel/look well
I'm not very well.
Are you feeling better now?
→ Opposite unwell
all is well

B1 everything is in a good or acceptable state:

I hope all is well with Jack.
be all very well

used to show that you do not agree with something or that you are annoyed about something:

It's all very well for her to say everything's fine, she doesn't have to live here.
be (just) as well

used to say that something might be a good thing to do or happen:

[ + (that) ] It was just as well that you left when you did.
→ See also be alive and kicking/well

(Definition of “well adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)