B1 in the most suitable, pleasing, or satisfactory way, or to the greatest degree: Which evening would suit you best for the party? The Grand Canyon is best seen at sunset. He couldn't decide which one he liked best (= preferred).Good, better and bestInformal words for goodQuite good, or not very good › to the greatest degree when used as the superlative of adjectives beginning with 'good' or 'well': They were the best-dressed couple at the party. He was voted the best-looking (= most attractive) actor in Hollywood.Good, better and bestInformal words for goodQuite good, or not very good as best you can mainly UK › as well as you can: It is a difficult passage, but just translate it as best you can.Trying and making an effortEffort and expending energy