Fail to answer question but get through (4)
I believe the answer is:
pass
I believe this clue is a quadruple definition!!
'fail' is the first definition.
(thesaurus)
'to answer' is the second definition.
(thesaurus)
'question' is the third definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'but' acts as a link.
'get through' is the fourth definition.
(I've seen this in another clue)
Can you help me to learn more?
(Other definitions for pass that I've seen before include "beats me" , "Narrow route through high mountain, like the Khyber" , "pointless bid" , "Blow over" , "At Wembley, no shot" .)