Opposite Of Smooth, Antonyms of Smooth, Meaning and Example Sentences Antonym opposite words contradict each other and meet opposite meanings. A word has synonyms as well as antonyms. When we learn a language, when we learn a word in that language, it will be very useful for us to learn both the opposite and the synonyms of this word. Because learning a word with its synonyms increases our competence in that language as well as our competence in speaking and writing. Learning a word with its opposite meanings both broadens our vocabulary and helps our activity on language. There are some