Moorland accommodation bombed (4,4)
I believe the answer is:
fell flat
'bombed' is the definition.
The definition and answer can be both to do with social activities as well as being past participle verbs.
Perhaps you can see an association between them that I don't see?
'moorland accommodation' is the wordplay.
'moorland' becomes 'fell' (fell can mean a moor).
'accommodation' becomes 'flat' (type of residence).
'fell'+'flat'='FELL FLAT'
Can you help me to learn more?
(Other definitions for fell flat that I've seen before include "failed to impress" , "provoked no interest" , "collapsed" .)