It has to do with the rhythm of the way words are joined. I'm not a linguist, so I don't know the exact right term to use here, but in English there isn't usually that kind of "pause" sound between words/consonants-- whereas, in my limited knowledge of French, it seems like that is quite common (many words seem to end in -re).

I looked it up and it seems I had the wrong pronunciation of "libre". It's pronounced completely different in French, I had no idea. But still, this feels like a non-issue to me. There's nothing wrong with pronouncing "libre" in a way that's more comfortable for English speakers (like Libra), as it would still be crystal clear what you're referring to in my opinion.

> It's pronounced completely different in French

For real? I thought both languages pronounced them like /libʁ/.

In English, pronouncing it similar to if it was (in French) libré, for the software sense, is quite common.

At least according to Google Translate, yes.

Lexical stress? https://youtube.com/watch?v=dUnGvH8fUUc

Is that a glottal stop?

I understand it, I think. The shape your lips/mouth make for the 'li' in 'library' is different than for the 'li' in 'libre' (at least when I try to pronounce the latter as french 'libre' but with an English 'r' which I have the impression is how it's supposed to be done and is also what the parent indicates, might be wrong?). As a result there's this weird movement to go from 'lee' to 'br' and I have a hard time getting a typical English 'r' out of it which I have zero problems with in 'library'. Non-native English speaker as well.