Suppress record (3,4)
I believe the answer is:
put down
This clue is a double definition.
'suppress' is the first definition.
(thesaurus)
'record' is the second definition.
(I know that record can be written as put down)
(Other definitions for put down that I've seen before include "Quell - crushing remark (3,4;3-4)" , "Write" , "Quell; snub" , "Slight" , "Record - suppress - disparage" .)