I think that's a very good reason for not using the word unless one has a very clear idea of what it means. Ill-defined jargon like this just causes confusion. Or maybe sometimes people are just too lazy to come up with better words?
True. That's why I avoid it unless I believe or hope the people I'm talking to have similar views.
In any case I don't see why I should have to ask people what they mean every time they use it, they should explain it, particularly if they are using the word in a non-traditional way.
You should, if you're interested in know what they mean. You can't say you're interested in their views and then be dismissive of every word they use that you don't agree with. The problem for you is how the word reflects on your own experiences and understanding, so to understand someone else, you have to dig in to what they mean. (And I can tell you that I'm extremely bad at this. Having a hard time following my own advice.
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Basically "God" is a bit of jargon and when people introduce jargon it's their responsibility to define it clearly. They shouldn't expect other people to guess.
True. But if they do defined what they mean, then don't immediately dismiss their definition. If I remember right, this discussion between you and me here started with some disagreement that you have with another member of their definition of God, right? So in other words, they have to use the word God defined as you see fit, not as they see fit, because they have to cater to your needs to be understood. Don't you ever consider that you might have to meet them halfway and accept some of their definitions even if you don't agree with how those words are defined? After all, if they describe an experience that can't be described in simple words, they would have to reach for many words and many descriptions to get there, and you would have to be forced to accept that they don't mean every word exactly the way you think of them.