Deny video was edited, cutting echo (7)
I believe the answer is:
disavow
'deny' is the definition.
(I know that disavow is a more specific form of the action deny)
'video was edited cutting echo' is the wordplay.
I cannot quite understand how this works, but
'was' could be 'is' (being is a kind of being) and 'is' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for disavow that I've seen before include "To deny knowledge of" , "Deny responsibility for (something)" , "To deny support" , "Refuse to acknowledge" , "Disclaim" .)