当番|とうばんtouban[1]atamadaka (head-high)

1. no-adjectivebeing on duty; person on duty; one's turn
   先月せんげつの日直にっちょく当番とうばん全部ぜんぶ私に押し付おしつけた形かたちでエスケープした野郎やろうだ。↗

   He's the pest that, on last month's class-help day, escaped leaving me with all the work.

• Related順番じゅんばんNeutralRefers to the order of taking turns or whose turn it is; 「当番」 is the duty itself or the person on duty.
• Antonym非番ひばんNeutralThe opposite of 「当番」 as to whether one is on duty: it means being off duty, not working one's shift.

Use 「当番」 for a duty you take turns being responsible for, as in 「掃除当番」; use 「順番」 for the order of the rotation. The opposite, being off duty, is 「非番」.

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

1. 何なんかをする番ばんに当あたること。その番ばんを担当たんとうすること。その人ひと。
2. 宿泊しゅくはくを伴ともなう番ばん。泊まり番とまりばん。