〜ないでください is the polite negative request form — "please don''t do X."
Polite prohibition - Asking someone not to do something
Requests - Please refrain from...
Please don''t take photos here.
More polite than ないで alone. Casual: 〜ないで
Verb ない-form + でください
- 食べる → 食べないでください
- する → しないでください
- 来る → 来ないでください
Casual form: 〜ないで (without ください)
Please don't worry.
Don't touch this.
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