not a/one whit

not a whit

old-fashioned Not at all or in any way. We are not concerned a whit about the inspector's investigation—we have nothing to hide, after all. A: "Do you mind if I tag along this afternoon?" B: "Not a whit!"
See also: not, whit

not one whit

old-fashioned Not at all or in any way. We are not concerned one whit about the inspector's investigation—we have nothing to hide, after all. A: "Do you mind if I tag along this afternoon?" B: "Not one whit!"
See also: not, one, whit

not a/one ˈwhit

(old-fashioned) not at all; not the smallest amount: The party leaders care not a whit about the principles of democracy and freedom.
See also: not, one, whit