個々・個個・箇々・箇箇|ここkoko[1]atamadaka (head-high)

1. no-adjectiveindividual; one by one; separate; each
   そのクラスの個々ここのメンバーは数学すうがくのあまり得意とくいでない生徒せいとによって足あしを引っ張ひっぱられたくないと思おもっているのです。↗

   Those individual members of the class do not want to be held back by others not so good at math.

• SynonymそれぞれNeutralThe most all-purpose word for 'each, respectively'; 「個々」 stresses viewing a whole as separate individuals.
• SynonymめいめいNeutralRefers to each person individually and is mostly used for people; 「個々」 is not limited to people.
• Synonym各自かくじNeutralMeans each person by themselves, as in 「各自で準備」; 「個々」 focuses on the individual items one by one.
• SynonymいちいちNeutralOne by one, down to every detail, often with a tinge of annoyance, as in 「いちいちうるさい」.
• Synonym逐一ちくいちWrittenWritten/formal prose for one by one, in detail, as in 「逐一報告」; 「個々」 centers on the individuals themselves.
• Synonym各個かっこWrittenWritten/formal prose for 'each, every one', as in 「各個撃破」; 「個々」 is more common.
• Synonym個々にここにNeutralThe adverb form of 「個々」, meaning one by one, separately; 「個々」 itself is a noun.
• Related個体こたいWrittenWritten/formal prose for a distinct individual set apart from others; in biology, a single organism; 「個々」 stresses treating things one by one.
• Antonym全体ぜんたいNeutralOpposite to 「個々」 on the individual-vs-whole axis: the whole, the entirety.
• Antonym一括いっかつNeutralAlso opposed to 「個々」 on the individual-vs-whole axis: handling things together, in one batch.

Use 「個々」 to view a whole as separate individuals, as in 「個々の事例」. For 'each, respectively' the most general choice is 「それぞれ」; for each person use 「銘々」 or 「各自」; for every single detail, often with annoyance, use 「いちいち」. The opposites are 「全体」 and 「一括」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ひとつひとつそれぞれ。