Definition

/dʌn/

verb

(auxiliary) A syntactic marker.
To perform; to execute.
“All you ever do is surf the Internet. What will you do this afternoon?”
To cause, make (someone) (do something).
To suffice.
“it’s not the best broom, but it will have to do; this will do me, thanks.”
To be reasonable or acceptable.
“It simply will not do to have dozens of children running around such a quiet event.”

adjective

(of food) Ready, fully cooked.
“As soon as the potatoes are done we can sit down and eat.”
Having completed or finished an activity.
“He pushed his empty plate away, sighed and pronounced "I am done."”
Being exhausted or fully spent.
“When the water is done we will only be able to go on for a few days.”
Without hope or prospect of completion or success.
“He is done, after three falls there is no chance he will be able to finish.”
Fashionable, socially acceptable, tasteful.
“I can't believe he just walked up and spoke to her like that, those kind of things just aren't done!”