Like a twangy voice (5)
I believe the answer is:
nasal
'like a twangy voice' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nasal that I've seen before include "Nosey" , "Relating to the nose" , "front piece of helmet" , "of a prominent feature" , "Sniffer's" .)