Passion in the boudoir, especially? (3)

I believe the answer is:

ire

'passion' is the definition.
(ire is passionate anger)

'in the boudoir especially?' is the wordplay.
'in' indicates the answer is hidden within the clue.
'IRE' is hidden in the letters of 'boudoir especially'.

(Other definitions for ire that I've seen before include "Intense anger" , "passionate feeling" , "Choler" , "passion" , "'Anger, wrath (3)'" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app