Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
nitty-gritty is a noun meaning "the choicest or most essential or most vital part of some idea or experience". It carries one recorded sense.
the choicest or most essential or most vital part of some idea or experience
“the gist of the prosecutor's argument”
“the heart and soul of the Republican Party”
“the nub of the story”
Canada · United Kingdom
Definitions, synonyms and semantic relations for nitty-gritty come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.