expression
trifles; minor details; small things
Refers to trivial matters, small details, or things of little importance. Often used in phrases like 細かいことを気にする (worry about trifles) or 細かいことはいいから (never mind the details).
彼は細かいことを気にしすぎる。
He worries too much about trifles.
細かいことは後で話しましょう。
Let's discuss the minor details later.
細かい is an adjective meaning 'small', 'fine', or 'detailed'. 細かいこと is a noun phrase meaning 'trifles' or 'minor details', often used as a set expression.
些細なこと also means 'trifles' or 'trivial matters', but 細かいこと can imply attention to small details, while 些細なこと emphasizes insignificance.
Compound of 細かい (こまかい, 'small, detailed') and こと ('thing, matter'). The phrase is a straightforward nominalization meaning 'small things' or 'minor matters'.