而com的部分曾经写作con，不过并不是pros and cons（利弊，正反）词组中con所代表的“否定”的意思，这个前缀实际上加强了单词的语气。
The com- in comfortable was once a con —but that didn’t mean “not” as in pros and cons, it is a prefix that intensifies the main meaning of the word.
比如法语词汇“désagréable”中含有否定义的前缀“dés-”和表形容词属性的后缀“-able”。
The French word désagréable, for example, contains the negating prefix dés- and the adjective-forming suffix –able.
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