by no means
by no means or not by any means also by no manner of means or not by any manner of means {adv. phr.}
Not even a little; certainly not.
He is by no means bright.
"May I stay home from school?" "By no means."
Dick worked on his project Saturday, but he is not finished yet, by any means.
Contrast: BY ALL MEANS.
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Source: A Dictionary of American Idioms