Adulterates (6)
I believe the answer is:
taints
'adulterates' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for taints that I've seen before include "Flaws in titans" , "Pollutes" , "Traces of bad quality in titans" , "Traces of decay in Titans" , "Contaminates" .)