1 superlative, unexcelled, finest, pre-eminent, first, superb, unsurpassed, superior, excellent, paramount, first-rate, Colloq A-1, A-one:
Henry VIII was the best rider, the best lance, and the best archer in England.
2 kindest, most beneficent, nicest:
Which of your brothers is the best to you?
3 foremost, choicest, pre-eminent, most suitable, most appropriate, most qualified, most talented, most desirable, most outstanding:
We want the best person to fill the job.
4 largest, most, greatest:
She had travelled the best part of the way by ship.
5 richest, wealthiest; first-class, upper crust, upper-class:
He associates only with those he considers to be the best people.
6 finest; first:
7 finery, best clothes, Colloq best bib and tucker:
He was all decked out in his Sunday best.
8 greatest or maximum effort:
He did his best but it wasn't enough to win.
9 most excellently, to the fullest extent, in the most suitable way, most adroitly, most skilfully, most superbly, most artistically:
All the children performed well, but Alice performed best.
10 with greatest satisfaction, most successfully:
He who laughs last laughs best.
11 win (out) over, conquer, beat, surpass, overpower, get the better of, subdue, defeat, worst, vanquish, trounce, rout, crush, master, outdo, overwhelm, overcome, outwit:
He was bested in three falls out of four.