最前線|さいぜんせんsaizensen[3]nakadaka (mid-high)

1. nounfront line; forefront

• Synonym第一線だいいっせんWrittenWritten style. Active on the front line, as in 「第一線で活躍」; 「最前線」 stresses the most intense point of the action.
• Synonym前線ぜんせんNeutralA front line in general, or a weather front; 「最前線」 emphasizes the very forefront.
• Related先頭せんとうNeutralThe very front of a line or column, leading the way; 「最前線」 points to a battlefield or the most intense front of work or research.
• Related陣頭じんとうWrittenWritten style. Taking the lead and directing, as in 「陣頭指揮」; 「最前線」 refers to the front-line position itself.
• Antonym後方こうほうNeutralThe rear, an area far from the front; the direct opposite of 「最前線」.

Use 「最前線」 for a battle front or the most intense front of work or research, as in 「医療の最前線」. For active front-line work pick 「第一線」, for the head of a line 「先頭」, for leading the charge 「陣頭」; 「後方」 is the opposite.

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

1. 戦争せんそうで敵てきと直接ちょくせつ対戦たいせんする戦列せんれつや陣地じんち。
2. 仕事しごと、研究けんきゅう、開発かいはつ、交渉こうしょう、市場しじょう取引とりひきなどの現場げんばで最もっとも白熱はくねつした場ば。第一線だいいっせん。