Thank you! I have finally managed to understand this word. It is the same in Bulgarian (my native language): непременно. I wonder how I didn't think about that word!
What Nvirjskly said is true for the use of непременно in Bulgarian too.
In English, the force of 'nepre' is best captured by saying 'do not' instead of 'don't'.
True, although Australian English "defo" does pretty much capture the meaning of «nepre» for informal usage, e.g. "Defo don't believe him!"
Does that mean that "he" is right, but the speaker is afraid of losing power?
One of those question which often float through my head while I do this.
I also note how one may apply it to their politician of choice.
Completely depends on the context, you'd use the same sentence in different contexts in English, so why not here? If a guy tried to tell your kids that it's safe to walk off some cliff, because there's an invisible bridge that will stop them from falling, this would be an appropriate thing to say (and likely followed by some much stronger words).
Don't think so. For example, someone might lie a lot, but still be trustworthy in terms of, say, not leading you off to the wicked witch's house (silly example, I know).
Never believe him, isnt acceptable? It has to be never ever, which is not very good english?
The best way to say this in North American English is: Whatever you do, don't believe him. The expression is always used with a negative command. Duo gave a strange English expression: Absolutely do not ..... (It is a VERY WEIRD English sentence.) The correct English expression, in my opinion, is Whatever you do, don`t (verb). This is my two cents.