周年(しゅうねん)

しゅうねん
suffix / noun
anniversary, -th anniversary
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.

PATTERN:
[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.

NOTE:
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 2026.3.29 13:19
09500/09520_shuunen