in a good or satisfactory way

the whole team played well

I haven't been sleeping very well

they seem to get on pretty well

in a thorough manner

add the mustard and lemon juice and mix well

very probably; in all likelihood

being short of breath may well be the first sign of asthma

in good health; free or recovered from illness

I don't feel very well

it would be some time before Sarah was completely well

I am not a well man

sensible; advisable

it would be well to know just what this suggestion entails

(of a liquid) rise up to the surface and spill or be about to spill

tears were beginning to well up in her eyes