A constitution that requires complicated procedure for its amendment is

A constitution that requires a complicated procedure for its amendment is called "rigid." A rigid constitution is difficult to amend, as it requires a special process that is more complicated than the regular legislative process. This is often done to ensure that the basic principles and values of the constitution are not easily altered by a simple majority vote. It typically requires a higher threshold of support, such as a two-thirds majority vote or the approval of a special constitutional convention, which helps to prevent frequent and hasty changes to the fundamental law of the land.