Best Definition & Meaning Antonyms of “best” reflect the opposite qualities, indicating lower quality or performance. As an adjective, “best” describes something of the highest quality or standing. The word “best” is often used to describe something that is of the highest quality or most favorable in a given situation. Over 500,000 expert-authored dictionary and thesaurus entries Examples are provided to illustrate real-world usage of words in context. Word Length…