Macron's expression of boredom? (5)
I believe the answer is:
ennui
'boredom?' is the definition.
(I know that boredom can be written as ennui)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for ennui that I've seen before include "World-weariness" , "What's tedious and instils such listlessness" , "Sense of tedium" , "Listless boredom" , "doldrums" .)