Confirmed (4-2-3-4)
There are a few possibilities for this:
dyed-in-the-wool
'confirmed' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ratified that I've seen before include "Formally confirmed" , "Gave formal permission" , "Gave formal consent to" , "(Of treaty) validated" , "Confirmed or accepted agreement or treaty" .)
'confirmed' is the definition.
(verifying is a kind of confirming)
This is all the clue.
(Other definitions for verified that I've seen before include "Shown to be true" , "Confirmed the accuracy" , "Established as true" , "Ascertained the truth of (something)" .)
'confirmed' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for dyed-in-the-wool that I've seen before include "Unchangeable in opinions" , "Unchanging in a particular belief" , "Inveterate - they do lie down (anag)" , "Fixed in one's opinions or attitudes" , "Extreme or unchanging in attitude" .)