Low interest rate due to unemployment perhaps (5)

I believe the answer is:

ennui

I'm a little stuck... Click here to teach me more about this clue!

'low interest rate' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for ennui that I've seen before include "French boredom and lassitude" , "Weariness with life" , "Boredom, tedium" , "Bored listlessness" , "tiredness" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.