Makeshift bed a goat's ruined (9)
I believe the answer is:
sabotaged
'ruined' is the definition.
The answer and definition can be both to do with social activities as well as being past participle verbs.
Maybe you can see a link between them that I can't see?
'makeshift bed a goat's' is the wordplay.
'makeshift' indicates anagramming the letters.
'bed'+'a'+'goats'='bedagoats'
'bedagoats' with letters rearranged gives 'SABOTAGED'.
Can you help me to learn more?
(Other definitions for sabotaged that I've seen before include "Deliberately destroyed (equipment, plans, etc)" , "Disabled" , "crippled" , "deliberately wrecked" , "Aged boats (anag)" .)