What is no worries?

"No worries" is a phrase commonly used in English-speaking countries, especially in Australia and New Zealand, to mean "don't worry about it," "it's fine," or "everything is okay." It is often used as a casual and friendly reassurance or to indicate that something is not a problem. The phrase can be used in various contexts, such as in response to a thank you or to downplay an inconvenience. Its popularity has spread to other parts of the world, making it a relaxed and comforting expression in casual conversation.