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a complete set of facts or details about how something is done or how it works
What is the origin of the idiom "the ins and outs of something" and when to use it?
The idiom "the ins and outs of something" refers to a comprehensive understanding of a particular subject, including all its details, complexities, and nuances. The origin of this phrase is derived from the idea that "ins" represent the inner or intricate aspects, while "outs" pertain to the outer or surface aspects of a subject or situation. Together, it signifies a thorough knowledge of a topic, situation, or process. This phrase is used to convey that someone possesses a deep and comprehensive understanding of a subject or can navigate through complex situations with ease, having explored all facets of it.
