toi: True to an extent. But really we’re very subservient to popular opinion in our language- it all depends on what people think we mean. If someone thinks that any word starting with the same letter as or rhyming with or sounding similar to a curse is instead of a curse, then people WILL think so.
The way that I think this ties into shiksa and frei is that it’s all in OTHER PEOPLE’S connotations. Unfortunately, language is one of those areas where you’re a lot more dependent on what other people mean than on what YOU mean, because they’re the ones listening to and interpreting your words. No matter what the origins of the words are, the important part Is to know whether what you say will insult those you say it to.