"did not at all" is correct and usable in written English.
This phrase is used to express complete lack or disagreement. Example: I did not at all approve of his behavior.
And in the campaign, we'll use you the way Al Gore did: Not at all.
He did not at all fit the American stereotype.
I wonder why the authors in the article did not at all use the term servitization.
But the Court did not at all rely on the Hepburn Act for this latter holding.
I did not at all intend to include a fictionalized self-portrait.
Since then, the opposition parties did not at all participate in drafting the new constitution.
Asked whether government forces use chemical weapons anywhere, he said they did not — "at all".
Mr. Navasky's defense of Mr. Vidal's piece did not at all reflect indifference to the poetry contest.
But such unknowable matters did not at all invalidate the search for hard fact, as the Dictionnaire abundantly shows.
But postwar empirical studies revealed a slight problem: actual trade did not at all seem to match these models.
"Everybody that sees it says it must have smelled but it did not at all," Jones said of his video.
