unwritten constitution
noun
a constitution, as in Great Britain, not codified as a document but defined by custom and precedent as embodied in statutes and judicial decisions.
Origin of unwritten constitution
First recorded in 1885–90
Words nearby unwritten constitution
unwound,
unwrap,
unwreathe,
unwrinkle,
unwritten,
unwritten constitution,
unwritten law,
unyielding,
unyoke,
unzip,
unzipped