日替わり

1. Origins, structure, and basic meaning

• Structure: 日替わり is read as ひがわり and describes something changing daily or a menu item offered as that day’s special.
• Basic usage: Use 日替わり定食 for a daily meal special and 日替わりで入れ替わる for rotation by day.

2. Common pitfalls and similar expressions

• Daily item and daily system
  • In a cafeteria it names the day’s set meal, while in an exhibit it describes the method of changing items each day.
• Not necessarily a weekly cycle
  • It means that content changes by day and does not itself require the same schedule to repeat every week.