"Unclean" or "impurity" refers to a state of being contaminated or unfit, often in a physical, moral, or spiritual sense. In many cultures and religions, certain actions, substances, or conditions can render a person or object unclean, requiring rituals or practices to restore purity. This concept is significant in various traditions, including Judaism, where specific laws dictate what is considered clean or unclean. In a broader context, impurity can also relate to health and hygiene, where uncleanliness may lead to the spread of disease or infection. Maintaining cleanliness is essential for personal well-being and public health, emphasizing the importance of hygiene practices in everyday life.