This is the 13589th most frequent German word.
dierf
It seems "dierf" is not a standard German word; it might be a typo or non-standard usage. Could you clarify or verify?
Here, 'darf' is the first-person singular form of 'dürfen' in the interrogative mood, indicating permission.
Darf ich Ihnen helfen?
May I help you?
In this case, 'darf' is used to express third-person singular permission or allowance.
Er darf heute länger aufbleiben.
He is allowed to stay up longer today.
Here, 'dürfen' in plural form ('dürfen') conveys a general permission or allowance.