1.AdverbIndicating degree, quantity or frequency greater than zero: to the slightest degree, in any way, at any time or in any circumstance."You mustn't speak to her at all.; Can you see anyone at all?; Are you at all bothered by the noise?; Let me know if you are at all concerned.; Were you angry that he was laughing too hard, or that he was laughing at all?; My speech didn't seem to go down well at all.; I'm glad that she didn't stay long, but sorry that she came at all.; This is the only one of the issues for which I am at all responsible.; If it’s at all possible, I'll try and do it."