No tricks, that's a promise (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
misere
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for misere that I've seen before include "Solo whist no-tricks bid" , "Card-player's call" , "Taking no tricks" , "undertaking to take no tricks" .)