An amendment is a change to the constitution of a nation or a state. In jurisdictions with "rigid" or "entrenched" constitutions amendments require a special procedure different from that used for enacting ordinary laws. Amendment procedures Flexible constitutions A flexible constitution is one that may be amended by a simple act of the legislature, in the same way as it passes ordinary laws. The 'uncodified' constitution of the United Kingdom (UK) consists partly of important statutes, and pa… (More on Amend)