Translation of besides

Question

My dictionary gave me two choices: de plus and en plus.  Qui plus est was not even a choice.  I always seem to make the wrong choice.  Can someone explain the nuances of the translation of besides?

Cécile Janty-Davies · Accepted Answer

Hi Frank,
When 'besides' means 'in addition to this', it will be translated as 'en outre', 'de plus' and we give you 'qui plus est' (lovely expression).
I would say that 'de plus' is the most common way to translate 'besides' in this instance.
Bonne Continuation !

Chris Wirt · Answer

The translation of "besides" in the sense of "in addition to", could be either "de plus de" as well as "en plus de". As I see it, they are both synonymes.

Elaine Leggett · Answer

So d'ailleurs, (which also means besides, and which I used), shouldn't be used in this context? Why?  Thank you for any answer. E

Cécile Janty-Davies · Answer

Hi Elaine, 
The expression 'd'aïlleurs' has many meanings including besides.
Please take a look at the following page with lots of examples -
https://www.thoughtco.com/dailleurs-1371175#:~:text=The%20adverbial%20French%20expression%20%E2%80%8B,or%20%22by%20the%20way.%22
 
I hope this helps!