In Chinese culture where the extended family is still valued, kinship terms have survived well into current usage. Also, since it is taboo to refer to or address a more senior family relation by his or her given name, the kinship term is the only possible term of address. When there are many siblings as in many Post–World War II baby-boom families, the relation is distinguished and addressed according to age or rank. For example, 大 (great/senior/elder) is used in the address for 大姨 (the eldest sister of one's mother); 二姨 for the second eldest sister of one's mother; 三姨 for the third eldest sister of one's mother, etc. In cases where someone is older than his more senior relation, such as an uncle, it is common to address the senior relation with a diminutive suffix.