Not makes a statement negative, while at all strengthens it. As a reply to thanks, the words suggest that helping was no trouble.
Not makes a statement negative, while at all strengthens it. As a reply to thanks, the words suggest that helping was no trouble.
What does not at all mean after thanks?
It politely says that helping was no trouble.
Can not at all answer a question?
Yes. It can give a firm no, often to reassure someone.
What does not at all add to a negative sentence?
It says the negative is complete, with no degree of the thing described.
Is not at all rude?
No. As a reply to thanks or a request, it is usually polite.
Can not at all stand alone?
Yes. It can be a complete reply in a conversation.