The first one is pronounced with an O shape with the mouth (like you would do with the word oh), and the others with more of a smile shape (like with the word see). It’s impossible to pronounce one like the other.

I’m not a native English speaker and I gave up trying to pronounce th (father, through). Although I can hear the difference.

This has to be a regionalism because there're strictly identical to me, eg. in "Un train." /œ̃tʁɛ̃/ I say the two vowels exactly the same way.

After a cursory search it seems my Parisian-ish accent is at fault: https://fr.wiktionary.org/wiki/Annexe:Prononciation/fran%C3%...

Yup, very parisian. Love how then they almost mock how pain (bread) is pronounced in the south-west where you won't mistake the sounds between the words un pain.

> I’m not a native English speaker and I gave up trying to pronounce th (father, through). Although I can hear the difference.

Why can't the Québécois count to four? Because there is a tree in the way.

Arguably so is “aim/ein etc” and “in”, though more dialect dependent and more subtle.

The former for me have a bit more exhale and round sound while the “in” are a tad drier.

For example “fin” and “faim” are distinct for me. However “faim” and “feint”