best adjective, adverb (HIGHEST QUALITY) of the highest quality, to the greatest degree, in the most effective way, or being the most suitable or pleasing; superlative of good orwell: Idioms (all) for the best, producing good as the final result: It turned out to be all for the best when I didn't get that job. Idioms as best one can, in the best way possible: As best I can tell, we're the first ones here. Shop Best Buy for electronics, computers, appliances, cell phones, video games & more new tech. Store pickup & free 2-day shipping on thousands of items. Explore the definition of the word best, as well as its versatile usage, synonyms, examples, etymology, and more. In the best of all possible worlds, no one would be without food and clean water. I have a wonderful family and a great job, so I feel that I have the best of both worlds. That’s why we build furniture that’s fully customizable to fit your life, style and space. When you buy from Best, you’re supporting local families and communities in the USA. You’re also taking home the chair, sofa or recliner of your dreams. Because from start to finish- It’s all yours. Use the Best Buy store locator to find stores in your area. Then, visit each Best Buy store's page to see store hours, directions, news, events and more. 1. In a most excellent way; most creditably or advantageously. 2. To the greatest degree or extent; most: He was certainly the best hated man in the ship (W. Somerset Maugham). BEST definition: of the highest quality, excellence, or standing. See examples of best used in a sentence. 25 Best & Fun Things To Do In Collierville (TN) Last Updated on: May 5, 2026 by Cynthia Valentine.