Has ring of truth, though article is badly written (9)
I believe the answer is:
realistic
'written' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I can't see?
'has ring of truth though article is badly' is the wordplay.
'article is' can be anagrammed to 'REALISTIC'.
Though, I am unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for realistic that I've seen before include "Facing facts, as it is clear" , "Faithful" , "true-to-life" , "Practicable" , "It is clear, being practical and sensible" .)