いちいち

every single time, every little thing

→ 一々
adverb Uncommon #18,027
every single time, every little thing Often implies annoyance at unnecessary attention to each individual detail.
JA: そんなことをいちいち説明しなくても分かります。
EN: You don't have to explain every little thing; I understand.

いちいち文句を言うのはよしなさい

Stop complaining about every little thing.

人の好みにはいちいち理由がつけられない

You can’t explain every personal preference.

いちいちうるさい

You're so annoying.

いちいち記憶に分かってる

I know I don’t have to remember every little thing.

— サイコ (1960)

いちいち指示するの止めて

Stop telling me what to do all the time.

お前いちいちうるさいなあ

You're so annoying.

いちいち細かいこと気にしてはいられない

I can't afford to sweat every little detail.

電話もしないなんていちいち電話する必要ない

I don't even call; there's no need to call every single time.

— グッドフェローズ (1990)

子供たちのやることいちいち腹を立ててはいけない

Don't get angry at every little thing the children do.

いちいちうるさい

You’re so annoying!

いちいち騒ぐんじゃねえ

Don't make a fuss over every little thing.

— グッドフェローズ (1990)