千秋|せんしゅうsenshuu[0]heiban (flat)

1. nounthousand years; many years

• Synonym千載せんざいWrittenA literary word for a thousand years or a long age, best known from 「千載一遇」 (a once-in-a-millennium chance); like 「千秋」 it belongs to elevated, classical diction.
• Synonym千歳ちとせWrittenThe same entry as 「千載」, written 「千歳」; it likewise means a thousand years or an age. The idiom 「千載一遇」 is written only with 「千載」, while 「千秋」 appears chiefly in 「一日千秋」.
• Related長年ながねんNeutralThe ordinary word for many years, as in 「長年の夢」 (a long-held dream); it can also be written 「永年」. 「千秋」 is poetic and lives mostly in set phrases.
• Related長期ちょうきNeutralMeans long-term and is usually attached to another noun, as in 「長期休暇」 (a long holiday); a plain everyday word, whereas 「千秋」 is poetic.
• Related多年たねんWritten「多年」 is a written-style word for many years, as in 「多年の研究」 (years of research); 「千秋」 is more archaic and elevated.
• Related積年せきねんWrittenA written word for years that have piled up, used mostly of long-standing grudges, as in 「積年の恨み」; 「千秋」 has no such nuance of accumulation.
• Related百年ひゃくねんNeutralLiterally a hundred years, also used figuratively for the long term, as in 「百年の計」 (a plan for the next century); 「千秋」 is more hyperbolic and more literary.
• Related百世ひゃくせいWrittenA literary word for generation after generation, the far future; 「千秋」 stresses the sheer length of time rather than the succession of ages.
• Related永年えいねんNeutralThe same word as 「長年」 in another spelling; 「永年」 is seen mostly in fixed expressions such as 「永年勤続」 (long service). 「千秋」 is confined to idioms and poetry.

「千秋」 is a literary word for a thousand years or a very long time, met mostly in set phrases: 「一日千秋の思い」 (a day feels like a thousand years) and 「千秋楽」 (the final day of a run of performances). For everyday many years use 「長年」; in writing, 「多年」.

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

1. 千せん年ねん。
2. 千秋ちあき万歳ばんざい。
3. 日本人にほんじんの名前なまえの一ひとつ。男女だんじょ共ともに用もちいられる。
4. 日本人にほんじんの姓せいの一ひとつ。