集中|しゅうちゅうshuuchuu[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbconcentration (on a task); focusing one's attention
   私は読書どくしょに集中しゅうちゅうしていた。↗

   I was concentrating on reading.
2. noun, suru verb, transitive verb, intransitive verbconcentration (of population, buildings, power, etc.); centralization; convergence; focus (of a debate, questions, etc.)
   彼かれの仕事しごとの大半たいはんが都市部としぶに集中しゅうちゅうしている。↗

   The bulk of his work is in the urban area.
3. nounwithin a collection of works

• Synonym傾注けいちゅうWrittenWritten word for pouring energy or effort into something, as in 「全力を傾注する」; the emphasis is on devoting one's energies.
• Synonym専心せんしんWrittenWritten and dignified: devoting oneself single-mindedly to one thing, as in 「研究に専心する」.
• Synonym専念せんねんNeutralDevoting yourself entirely to one thing and nothing else, as in 「治療に専念する」; stresses wholehearted commitment.
• Synonym一心不乱いっしんふらんNeutralFour-character idiom for acting wholeheartedly with no distractions, as in 「一心不乱に祈る」.
• Synonym一心いっしんNeutralUsually as 「一心に」, meaning with all one's heart and single-mindedly; leans toward written style.
• Synonym結集けっしゅうNeutralGathering forces or efforts together, as in 「総力を結集する」; stresses pooling things, while 「集中」 also covers focusing attention.
• Related夢中むちゅうNeutralBeing crazy about or absorbed in something, as in 「ゲームに夢中」; stresses losing yourself, while 「集中」 is more rational and conscious.
• Related注意ちゅういNeutralPaying heed, being careful, or a warning, as in 「注意を払う」; stresses watchfulness, while 「集中」 stresses keeping attention from scattering.
• RelatedコンセントレーションNeutralLoanword used mostly in sports and mental training; in everyday speech say 「集中」.
• RelatedアテンションNeutralLoanword for attention or interest, familiar from 「アテンションプリーズ」; everyday speech uses 「注意」, and it doesn't carry the focused sense of 「集中」.
• Related没入ぼつにゅうWrittenWritten word for being immersed or sunk into something, as in 「作品に没入する」; the emphasis is on deep absorption.
• Related注意集中ちゅういしゅうちゅうNeutralConcentration of attention; mainly a psychology term. In everyday speech say 「集中」.
• Antonym分散ぶんさんNeutralAntonym: scattering or spreading things out, as in 「リスクを分散する」; the opposite of 「集中」.
• Antonym散漫さんまんNeutralAntonym: distracted and unfocused, as in 「注意力散漫」; the opposite of 「集中」.

Use 「集中」 for focusing attention or for people, resources and power gathering in one place. For wholehearted devotion pick 「専念」, for being hooked on something 「夢中」, for marshalling forces 「結集」, and for watchfulness 「注意」. 「傾注」「専心」「没入」 are written-style alternatives, 「一心不乱」 an idiom for undivided attention. The opposites are 「分散」 and 「散漫」.

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

1. 一いちヶ所かしょないしはごく限かぎられた範囲はんいに集あつまること。
2. 意識いしきを特定とくていの物事ものごとに傾かたむけること。
3. 一いちヶ所かしょないしはごく限かぎられた範囲はんいに集あつまる。
4. 一いちヶ所かしょないしはごく限かぎられた範囲はんいに集あつめる。
5. 意識いしきを特定とくていの物事ものごとに傾かたむける。