Gave no answer? (6)
I believe the answer is:
denied
'gave no answer?' is the definition.
(to deny is to give an answer of 'no')
This is the entire clue.
(Other definitions for denied that I've seen before include "Declared something to be untrue" , "Refused to admit (the truth)" , "Refused to admit and refused access to" , "Contradicted" , "Refused to acknowledge, said it's not true" .)