nit·ty–grit·ty 
/ˈnɪtiˌgrɪti/ noun
/ˈnɪtiˌgrɪti/ noun Meaning:
the nitty-gritty
informal : the most important and basic facts or details about something
▪ He deals with the nitty-gritty of running the department. ▪ We finally got down to the nitty-gritty of the problem. ▪ Let's get down to the nitty-gritty and find out what happened.
▪ He deals with the nitty-gritty of running the department. ▪ We finally got down to the nitty-gritty of the problem. ▪ Let's get down to the nitty-gritty and find out what happened.
