周 年(しゅうねん)

しゅうねん

suffix, noun

anniversary, -th anniversary

time-general

1. anniversary, -th anniversary

A suffix indicating the number of years since an event, used for anniversaries.

結婚(けっこん)10周年(しゅうねん)。

10th wedding anniversary.

会社(かいしゃ)設立(せつりつ)50周年(しゅうねん)。

50th anniversary of the company's founding.

来月(らいげつ)結婚(けっこん)30周年(しゅうねん)を迎(むか)える。

Next month marks their 30th wedding anniversary.

周年(しゅうねん) is a suffix/noun meaning "anniversary" — the number of complete years since an event.

Common patterns

[number] + 周年(しゅうねん) = [number]th anniversary

Common expressions

結婚(けっこん)10周年(しゅうねん): 10th wedding anniversary
創業(そうぎょう)50周年(しゅうねん): 50th anniversary of founding
開店(かいてん)1周年(しゅうねん): 1st anniversary of opening
〜周年(しゅうねん)記念(きねん): ~th anniversary commemoration
〜周年(しゅうねん)を迎(むか)える: to mark/celebrate a ~th anniversary

Usage

Often seen in sales and marketing: 創業(そうぎょう)100周年(しゅうねん)記念(きねん)セール (100th founding anniversary sale). Also common for personal milestones like wedding anniversaries.
Do not confuse with 執念(しゅうねん) (tenacity, obsession), which has different kanji despite similar pronunciation.

general

Added 2026.2.2 19:21 · Revised 2026.9.2 13:01

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