It is all about context. People who dance around the words "you're stupid" use phrases like that. The reason why this is such a problem when it comes to people like this is that they never take responsibility for a stupid decision. They act like they never made a bad decision. You don't sound like a person like this.

I disagree that that those (except for the last one, that seems to me to be pointless to say after the fact) mean "you're stupid." They could certainly be *said* with that meaning, but I don't think they have to be! I have said, "Hmmm, I wouldn't choose to do that," but it's followed up with, "But if that's your choice, then I will respect that." (unless it's a safety issue--I won't respect one of my kid's desire to punch their sib for example). I have said, "Wow, maybe that wasn't such a good idea..." (which kinda means the same as "that was a bad idea") but it's in a context of a discussion where the kid has already come to that conclusion, and then i help/reflect with them to brainstorm ways to deal with the consequences or make amends.
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Some of the ideas that I (or my kids) have ARE bad ideas! I have even said in front of my kids when I made a poor/unwise decision that impacted all of us, "WHOA, now *that* was a bad idea on my part--I guess I'll have to try to fix it by doing X, yikes! Oh well, i guess I will know better next time, sorry about that!" Is there something i'm missing wrt acknowledging that a bad/unwise idea is not a good thing to do...or is it a language thing? (the word "Bad" being...bad.)
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