vitiator
/ˈvɪʃiˌeɪtər/
noun
- A person or thing that spoils, weakens, or reduces the quality or effectiveness of something.
- He was seen as a vitiator of the team's harmony with his constant complaints.
- The faulty sensor acted as a vitiator of the entire security system.
- The leaky roof was a vitiator of the museum's collection.
Synonyms