Bedstead almost wrecked causes arguments (7)
I believe the answer is:
debates
'arguments' is the definition.
('debate' can be a synonym of 'argument')
'bedstead almost wrecked' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'wrecked' indicates an anagram.
'bedstead' with its last letter removed is 'bedstea'.
'bedstea' with letters rearranged gives 'DEBATES'.
'causes' is the link.
(Other definitions for debates that I've seen before include "Discusses" , "Formal discussions" .)