1. the details of something
Professional
Social
show someone/look into the ins and outs of something
When you refer to the 'ins and outs' of something you are talking about the details or the complicated facts or workings of something. "I'd like a brief summary, I don't need to know all the ins and outs." "I was always fascinated by photography, I wanted to know all the ins and outs of how a camera and light work together to produce an image." Though this a multi-word an expression it is used as a noun.