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Customary law is defined as customs or practices that are accepted as law by a group. This type of law arises from the traditions, practices, and social norms within a community or group, and it reflects the values and beliefs of those who follow it. In many cases, customary laws develop organically over time and are recognized by the community as binding, even in the absence of formal written statutes.

The importance of this definition lies in its recognition of the role that cultural practices and societal norms play in governance. Customary law can coexist with formal written laws and often influences how laws are interpreted and enforced within specific communities.

This forms a critical aspect of governance in societies where legal systems may be based on traditions rather than codified statutes, and it emphasizes the blended approach to justice and law that can exist alongside formal legislative processes.