How to change the default dictionary on iPhone & Mac? I'm using iPhone and MacBook. Both there are a default English-English dictionary, which is convenient.

However, I'd prefer a French-English dictionary, while I'm learning French on iPhone or Mac. 

Is there a way to change the default dictionary on iPhone or Mac, to a French-English one?
In order to change the priority on your Dictionary App, go do Dictionary > Preferences.

Choose the dictionaries you want to be activated — assuming you have them installed — and drag them to choose the priority, *from top (highest priority) to bottom.

Note that if you look for a word in a certain language, dictionaries that don't have that word won't appear in the search results.



Change localization on your Mac:


Go to System Preferences > International > Languages.
Click on "Edit list" to add/remove the dictionaries.
Drag the dictionaries in the list itself to sort the priority which works from top to bottom.