From Longman Dictionary of Contemporary Englishdo your bestdo your bestTRY TO DO OR GET somethingto try as hard as you can to do something As long as you do your best, we’ll be happy.do your best to do something She did her best to make him comfortable. → best
Examples from the Corpus
do your best• Remember, always do your best, don't let them hook you, however tempting the bait.• Like Truman two decades earlier, Humphrey did his best to overcome the severe handicap of a badly split party.• But I did my best to feed them both.• We can only do our best.• What I learned from them specifically of the techniques of teaching I have had to do my best to unlearn since.• He wanted to do his best the first time he performed, and knew he was not in peak condition.• Once there, Drachenfels will do his best to isolate the crystal-wielding characters and rob them of their treasures. 