avoidance relationship
noun
- a familial relationship that is forbidden according to rules operating in some traditional societies. In Australian Aboriginal society, for example, mothers-in-law and sons-in-law may not meet face to face or speak directly with one another.回避关系（某些传统社会奉行的规则所禁止的家庭成员间的关系, 如澳大利亚土著社会中岳母和女婿互相不得见面或直接对话）。