not at all vs not in any way

not at all

adv

  • Not in the least. 

intj

  • Used similarly to you're welcome, as a conventional reply to an expression of gratitude. 

  • Don't worry about it (response to worry or an apology) 

not in any way

How often have the words not at all and not in any way occurred in a corpus of books? (source: Google Ngram Viewer )