Antonyms are words that have opposite meanings to one another. The phrase "sets a match to" means to ignite or catch on fire. Its antonyms can include words such as extinguish, douse, quench, or smother. These words mean to put out a fire, rather than start one. In a broader sense, other antonyms for "sets a match to" can be calm, soothe, pacify, or quiet, which all mean to bring a situation to a peaceful, non-confrontational state. Knowing antonyms can help expand your vocabulary, improve your writing, and offer a deeper understanding of language.