浊声母的“重”字有平声、上声、去声三种读法,分别表示不同的意义。本文考察了“重”字在中古、近代、现代音义书、字书、韵书和字典中所载的音义关系及其发展,认为“重”中古“再”义的去声音来自平声“叠、复”义的破读,其“加重、程度深”义的去声音来自上声“不轻”义的破读,两个语义派生汇合在一个去声之中。当中古浊上到近代演变成去声时,“重”从平声派生出的“再”义去声音返回原来的平声读法,而从浊上派生出的“加重、程度深”义去声音则与从浊上演变来的去声合併,因此现代“重”字的去声破读音在近代可以说被取消了。这一特殊现象启发我们检讨其他多音字在破音别义跟语音演变交织发展中的情形。 Voiced consonant “heavy ” words have flat sound, on the sound, the sound of three reading, respectively, that different meanings. This dissertation examines the relationship between sound and meaning of “heavy” characters in medieval, modern and contemporary sound and sound books, word books, rhyme books and dictionaries and their development, and concludes that the “sound” of “heavy” From the flat sound “stack, complex ” meaning of the reading, its “deepening, the degree of deep ” righteous go sound from the sound “not light ” meaning of the reading, the two semantic derivatives meet in a go Among them. When the ancient cloud to the modern evolved into the sound of the sound, “heavy ” from the flat sound derived “re ” meaning to voice back to the original flat voice reading, and derived from the turbidity “aggravating, the degree of deep The meaningless sound is merged with the sound that has evolved from the voiced sound, so that the sound of the modern ”heavy" syllable can be said to have been canceled in modern times. This special phenomenon inspired us to review the situation in which other polyphonic words are intertwined with the evolution of phonetics.