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).
He worries too much about trifles.
Let's discuss the minor details later.
重要 describes something important or significant, the opposite of the trivial nature implied by 細かいこと.
Standard kanji spelling; the phrase is often written in kanji.
Variant using 事 for こと; less common but still seen.
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'.