get rid of sth › to throw something away or give something to someone because you do not want it now: We must get rid of some of those old books. › to end something unpleasant: I can't seem to get rid of this headache.
get rid of sb › to make someone leave: She was useless at her job so we had to get rid of her.
be rid of sb/sth › to be without someone or something that you do not like or want: I'd do anything to be rid of him.