语言学家一般都认为:意义相对或相反的一组词互为反义词。这个定义包括两点:一、从语义内容上讲,它要求该组词意义相反相对;二、从语法形式上讲,它们只存在于“词”一级语法平面。这个定义并不包括语音形式方面的内容。因此,“美丽”和“丑陋”、“美丽”和“丑”各是一组反义词;但“美丽”和“肥胖”、“美丽”和“不美”却都不是一组反义词。 Linguists generally think that a group of words that are relative or opposite in meaning are antonyms. This definition includes two points: First, from the perspective of semantic content, it requires that the group of words have opposite meanings; Second, from the grammatical form, they only exist in the “word” level 1 grammar plane. This definition does not include the form of speech. Therefore, “beautiful” and “ugly”, “beautiful” and “ugly” are each an antonym; but “beautiful” and “obese,” “beautiful” and “not beautiful” are not an antonym.