abater

/əˈbeɪtər/
noun
  1. A person or thing that reduces, lessens, or puts an end to something.
    • As an abater of pollution, the company installed filters on its smokestacks.
    • The mediator acted as an abater of conflict between the two groups.
    • The new noise-canceling headphones are an effective abater of background sounds.
Antonyms
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