in a manner affording benefit or advantage; "she married well"; "The children were settled advantageously in Seattle"
it would be sensible; "you'd best stay at home"
to a great extent or degree; "I'm afraid the film was well over budget"; "painting the room white made it seem considerably (or substantially) larger"; "the house has fallen considerably in value"; "the price went up substantially"
tending to promote physical well-being; beneficial to health;
in a most excellent way or manner; "he played best after a couple of martinis"
with skill or in a pleasing manner; "she dances well"; "he writes well"
in excellent physical condition;
from a position of superiority or authority; "father knows best"; "I know better."
with prudence or propriety; "You would do well to say nothing more"; "could not well refuse"