This word can also be a form of:
noun “best”
 singular best, plural bests or uncountable
- the greatest effort possible from someone 
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 After studying all night, I gave the test my best.
 - the individual or item that is the most outstanding or superior 
In the competition, only the best will advance to the finals.
 
verb “best”
 infinitive best; he bests; past tense bested; past part. bested; ger. besting
- to exceed or do better than someone else in ability or performance 
He bested his chess opponent after a long and strategic game.