constitutionalist
[ kon-sti-too-shuh-nl-ist, -tyoo- ]
/ ˌkɒn stɪˈtu ʃə nl ɪst, -ˈtyu- /
noun
an adherent or advocate of constitutionalism or of an existing constitution.
an expert on a political constitution.
Origin of constitutionalist
First recorded in 1760–70;
constitutional +
-ist