Context: Vor 60 Jahren hätte niemand das Wort ,,Sex" laut ausgesprochen. Sex war privat, aber selbst da versteckt und lustbefreit. You can build a number of words adding "-befreit" (literally: "free of"). So it's not really a neologism, it's a construction that's not uncommon. But like many compound words, a dictionary won't list those. It's also not uncommon that this construction is used tongue-in-cheek style, so you have to be careful when interpreting it. Here, according to the context, the meaning is just the plain one: Sex was "officially" just seen as a duty ("eheliche Pflicht") between a married couple, and the whole aspect that it can be fun was (officially) completely ignored. So even if people enjoyed it, no one would have admitted so it in public.

I don't see the word in that sentence?

Hi! I read the same article. In this context i would say that lustbefreit sex is sex that is not considered as matter of receiving pleasure.

lustbefreit = ohne Lust = without lust This construction isn't very common. More common is: sinnbefreit = ohne Sinn = something doesn't make sense