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Noun: nitty-gritty  'ni-tee'gri-tee
Usage: Brit
  1. The choicest or most essential or most vital part of some idea or experience
    "the nitty-gritty of the prosecutor's argument";
    - kernel [Brit], substance [Brit], core [Brit], center [Brit, US], centre [Brit, Cdn], essence [Brit], gist [Brit], heart [Brit], heart and soul [Brit], inwardness [Brit], marrow [Brit], meat [Brit], nub [Brit], pith [Brit], sum [Brit]

Type of: cognitive content, content, mental object

Encyclopedia: Nitty-gritty