The process by which words of good origin fall into ill reputati

The process by which words of good origin fall into ill reputation or non-affective words come to be used in derogatory sense is called( ). 
【正确答案】：DEGRADATION/ PEJORATION
【题目解析】：在贬义中使用“好出身”的词或非情感性词汇的过程被称为“降格”。