not for a/one moment
Definition of not for a/one moment
: at no time : not at all I did not believe her for a/one moment.
Word by Word Definitions
: a minute portion or point of time : instant
: a comparatively brief period of time
: present time
Seen and Heard
What made you want to look up not for a/one moment? Please tell us where you read or heard it (including the quote, if possible).