Usages of keinesfalls
Ich trage mir den Abgabetermin fett in den Kalender ein, damit ich ihn keinesfalls vergesse.
I enter the submission deadline in bold in my calendar so that I definitely do not forget it.
Du darfst das Fenster keinesfalls in der Nacht offen lassen.
You must by no means leave the window open at night.
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