Antonyms are words that are opposite in meaning to a particular word. For the word "re-fills," antonyms can include words like "empty," "deplete," "reduce," "exhaust," "drain," and "evaporate." These words reflect the opposite of "re-fills," which means to refill something that was previously filled. While "re-fills" indicate a surplus or abundance of something, its antonyms connote a lack or scarcity of the same thing. When you use antonyms for "re-fills," you are saying that there is no more to fill, or that the supply has dried up. By understanding antonyms, we can better appreciate the nuances of language and choose the right words for effective communication.