It's always possible to remove democracy democratically. But the (legal) mechanism for doing this is made difficult on purpose, and rightly so. It's usually going to require a constitutional amendment, which requires a supermajority or referendum or something, not just a simple majority vote as if we are passing laws on mundane things like parking tickets. That's good, because it should be hard to remove people's fundamental rights on a whim during a temporary wave of hysteria and passion. Democracies have these safeguards to make it difficult on purpose.
I'm going to repeat myself with my response. If people want to democratically remove democracy, then they can. If they want to make murder not a crime, they can. If they want to remove everyone's rights, they can. There are democratic mechanisms that can achieve all these idiotic things if the people really want to achieve them. Revoking these rights is made difficult on purpose because, over a period of 50+ years, the majority of people have decided that we shouldn't revoke said rights if only 50.001% of people wish to do so over a timeframe of 1 day. They built mechanisms to make very sure that it really was the will of the people if said rights were to be permanently revoked.
Since you don't like that word, what should we call trying to use fraud or violence to steal an election? A traitor? A candidate for a firing squad? A guy trying his hand at a bit of high treason?