not at all
Definition of not at all
—sometimes used as a polite response after an expression of appreciation or thanks “Thank you for all your trouble.” “Not at all.” “That was very kind of you.” “Not at all. It was the least I could do.”
From the M-W Editors
Word by Word Definitions
: the whole amount, quantity, or extent of
: as much as possible
: every member or individual component of
: wholly, quite
: only, exclusively
: just
: the whole number, quantity, or amount : totality
: used in such phrases as for all I know, for all I care, and for all the good it does to indicate a lack of knowledge, interest, or effectiveness
: everybody, everything
: the whole of one's possessions, resources, or energy
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