well-settled
Adjective
Meaning
well-settled (comparative more well-settled, superlative most well-settled)
Fully established or determined; standing on firm historical footing.
Synonym: well-established
Examples
"Under well-settled law, the executive branch does not get to go forth with policies that Congress specifically rejected," District of Columbia Attorney General Karl Racine said in a call with reporters.
The classical artistes, who come from well-settled families, can perform for free.