Being stoical, I'm not resisting (9)

I believe the answer is:

impassive

'being stoical' is the definition.
(thesaurus)

'i'm not resisting' is the wordplay.
'not resisting' becomes 'passive' (I've seen this before).
'im'+'passive'='IMPASSIVE'

(Other definitions for impassive that I've seen before include "Not showing emotions in face" , "poker-faced" , "Unconcerned" , "Expressionless" , "unfeeling" .)

I've seen this clue in The Irish Independent.

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