At allfrom English Grammar TodayAt all means in any way. We use it with questions and negatives to add emphasis, but not with affirmative statements:Do you want to swim in the sea at all?She was not at all frightened.We can use at all before or after an adjective:Were you at all upset by Kevins behaviour?They werent interested at all.At all and politenessWe often use at all at the end of a question to make the question sound more polite:ID is an abbreviation of identification!Do you have any ID at all?a waiter in a restaurant!Would you lie any desserts at all?We can use not at all as a polite response to questions asking Would you mind !? or Do you mind !? and as a polite follow"up response to than you:A:Would you mind taing this par"el to the main offi"e?.B:#o, not at all.A:Do you mind if I sit here?B:Not at all.A:Thats very ind of you$ than you.B:Not at all.