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Từ điển Oxford Advanced Learner 8th
nitty-gritty
the nitty-gritty BrE [ˌnɪti ˈɡrɪti] NAmE [ˌnɪti ˈɡrɪti] noun singular (informal)
the basic or most important details of an issue or a situation
•Time ran out before we could get down to the real nitty-gritty.
Word Origin:
[nitty-gritty] 1960s: of unknown origin.
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