Wiktionary
adv. (context idiomatic English) Not at all, not in the slightest
Usage examples of "not by any means".
And though this also holds true of merchant vessels, yet not by any means to the same extent as with whalemen.
The temperature had gone up, but sitting in the sun was not by any means unbearable, and the steady breeze helped cool them off.
They had not by any means finished the task when you knocked at he door, Gray.
I have sent Charles to town to make matters up if he can, for I do not by any means want her here.
For he must not by any means so conduct his defence as to prevent the case from being conducted in a plain and summary manner, and he would be doing so if he introduced any complications or appeals into it.
This connecting link was doubtless a prudent precaution, but not by any means unattended with danger.