Crossword Genius

Unable to perform in Cath's bedroom, when nervous (4,2,6)

Ross

I believe the answer is:

hors de combat

'unable to perform' is the definition.

'cath's bedroom when nervous' is the wordplay.
'when nervous' indicates an anagram.
'caths'+'bedroom'='cathsbedroom'
'cathsbedroom' anagrammed gives 'HORS DE COMBAT'.

'in' acts as a link.

(Other definitions for hors de combat that I've seen before include "Injured and out of action (French)" , "Out of action due to injury" , "Disabled, out of the fight" .)

I've seen this clue in The Guardian.
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