Walking out (12)
I believe the answer is:
somnambulism
This could be a double definition.
'walking' is the first definition.
(I know that somnambulism is a type of walking)
'out' is the second definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
Can you help me to learn more?
(Another definition for somnambulism that I've seen is " Sleepwalking".)
I've seen this clue in The Independent.
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