A flexible constitution is one that can be easily amended or changed. This means that the rules and laws that govern a country can be adapted to fit changing circumstances, without the need for a lengthy or difficult process. Unlike a rigid constitution, which is more difficult to change, a flexible constitution can be adjusted to meet the needs of the people it serves, as well as respond to new situations and challenges that may arise over time. This can help ensure that a constitution remains relevant and effective, even as society and politics continue to evolve.