the ins and outs of sth

/ðɪ ˈɪnz and ˈaʊts ɒv ˌɛstˌiːˈeɪtʃ/

/ðɪ ˈɪnz ænd ˈaʊts ʌv ˌɛstˌiːˈeɪtʃ/

[phrase]

the ins and outs of sth

[PHRASE]

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.

Examples

1. Dietary experts can advise on the ins and outs of dieting.

2. (Mitch) Over the past year we've shown you the ins and outs of some crazy science but have you ever wondered whose hands these are?

3. Before we start, I want to let you know that this video covers the ins and outs of hyena genitalia.

4. Hi, this is Kate from MinuteEarth, and before we start, I want to let you know that this video covers the ins and outs of hyena genitalia, so if that’s not something you’re keen to learn about, you can check out some of our other videos.