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English definition of “best”

best

adjective, adverb (HIGHEST QUALITY)   /best/
of the highest quality, to the greatest degree, in the most effective way, or being the most suitable or pleasing; superlative ofgood orwell: He’s one of our best students. Which of the songs did you like best? She was my best friend at school. best bet Someone’s best bet is the action most likely to be successful: If you want to get to the theater on time, your best bet is to get a cab. Best wishes Best wishes is a polite way of finishing a letter to someone.
(Definition of best adjective, adverb (HIGHEST QUALITY) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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