stringency
noun [ U ]
uk/ˈstrɪndʒənsi/ usa situation in which a law, test, etc. is extremely severe or limiting and must be obeyed:
the stringency of sth The statute prohibits the adoption of environmental protections laws that exceed the stringency of federal regulations.
a situation in which companies or governments can spend only very little money because of difficult economic conditions:
financial/fiscal/economic stringency