declining birth rate; decrease in the number of children; sub-replacement fertility
A demographic term referring to the societal trend of fewer children being born, often discussed in the context of aging populations and economic impact.
The declining birth rate has become a serious problem in Japan.
As a measure against the declining birth rate, the government expanded childcare support.
The birth rate is declining rapidly in this country.
The government announced policies to curb the declining birth rate.
Support for child-rearing is essential to stem the declining birth rate.