"My brother's wife is very unfriendly."
Translation:La femme de mon frère est très antipathique.
Is 'antipathique the correct word for 'unfriendly' ?
According to Le Robert et Collins :
Froid / Inamical / Hostile = Unfriendly
Antipathique = Unpleasant
Deepl translates Antipathique as "Unilikeable".
There are subtle differences between the 3 words in BritE and [IMO] they are not really interchangeable.