In English, antonym is a word that is contrary or opposite in meaning to another. It has many rhetorical functions, such as antithesis, paradox, oxymoron, irony, etc. And these functions are embodied and widely used in literary works. In English, antonym is a word that is contrary or opposite in meaning to another. It has many rhetorical functions, such as antithesis, paradox, oxymoron, irony, etc. And these functions are embodied and widely used in literary works.