Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Kyung-chul is able to sense wickedness in others and recognizes that his relentless adversary has become tainted by evil, musing at one point that Soo-hyun is a real psycho.
Source: https://www.slashfilm.com/1252998/i-saw-devil-ending-explained/