定休日|ていきゅうびteikyuubi

1. nounregular holiday; fixed day off; regular closing day
   本日ほんじつ定休日ていきゅうび。↗

   Today is our regular closing day.

• Synonym定休ていきゅうNeutralShort form of 「定休日」, used mostly on signs and in advertising, as in 「水曜定休」.
• Related公休日こうきゅうびWrittenWritten/formal word for public days off that law or a company gives employees; the focus is on staff resting, whereas 「定休日」 is a day a shop regularly stays closed.
• Antonym営業日えいぎょうびNeutralThe opposite of 「定休日」: a day when business is open, as in 「3営業日以内に発送」.

Use 「定休日」 for a day a shop or company regularly closes (「月曜定休日」), shortened to 「定休」 on signs; 「公休日」 is for employees' days off set by law or company rules; the opposite is 「営業日」.

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

1. 商店しょうてん・会社かいしゃなどで、あらかじめ定さだめてある休業きゅうぎょうの日ひ。「月曜日げつようびが定休日ていきゅうびの散髪屋さんぱつや」