ないで (Casual Request)(Please) do not (for me), Casual request

ないでください is a polite way to express 'please don't do (A)'. However, such politeness is often not required, like in conversations between close friends. In these cases, ないで by itself may be used for the same purpose. Although grammatically the same as the ないで with the meaning of 'without doing (A), (B)', rather having a part (A) and a part (B) to the sentence, this ないで acts more like a simple statement.

ないで combines the auxiliary verb ない, with the case marking particle, で. To use this structure, simply attach it to the negative stem of the verb that you wish to request someone not to do. The sentence itself usually finishes with ないで.