A person or thing that damages, harms, or causes injury to something or someone.
From 'damage' plus the agent suffix '-er', which creates nouns meaning 'one who does' the action; someone or something that inflicts damage.
In legal contexts, a 'damager' has real consequences—courts identify damagers and force them to pay restitution, making the word a bridge between abstract harm and concrete financial responsibility, turning damage into dollars.
Complete word intelligence in one call. Free tier — 50 lookups/day.