best

See:

as best (as) you can as best you can at your best at best at the best of times be far and away the [best/greatest/worst etc.] be for the best be on your best behaviour be the best of a bad bunch/lot someone's best bet your best bib and tucker the best of both worlds the best of the best

the best of the lot the best/greatest thing since sliced bread bring out the best in someone come off second best do your (level) best do your level best First in, best dressed. for the best get the best of you give something your best shot give it your best shot Honesty is the best policy. know best

Laughter is the best medicine. make the best of something make the best of a bad situation man's best friend May the best man win. on your best behavior put your best foot forward second best six of the best with the best of them with the best will in the world