Come down in buckets is an idiom that refers to heavy rain. The antonyms for this phrase would be words that describe the absence of rain or dry weather conditions. Some antonyms for "come down in buckets" could include "clear skies," "sunny," "dry," "arid," or "drought." These words suggest the opposite of heavy rain, and imply a weather condition where there is no precipitation. Antonyms are important for improving our vocabulary, as they help us understand the opposite meaning of a word or phrase. By using antonyms, we can better articulate our thoughts and express ourselves more effectively.