I have seen OS projects use the word "libre" in English before to distinguish between "free as in beer" and "free as in speech" uses of the word. But I can't remember which projects I've seen using that.
It looks/sounds foreign and feels a bit pretentious to use in conversation
.. or I feel like some gringo speaking broken Spanish
“Entrepreneur” is worse on both counts, yet I don’t see those complaints about it. Must be because it’s associated with money.
We get liberty, liberal from the same root.
https://en.wiktionary.org/wiki/libre gives a pronunciation which matches my own (lee-bruh).