French apathy (5)
I believe the answer is:
ennui
This could be a double definition.
'french' is the first definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'apathy' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for ennui that I've seen before include "World-weariness" , "Mental weariness" , "What's tedious and instils such listlessness" , "Effect of boredom" , "Boredom, listlessness" .)