IPA: /dɪˈpriːʃieɪtə/
KK: /dɪˈpriːʃieɪtər/
A person or thing that causes a decrease in value or worth.
The depreciator of the company's assets led to a significant drop in its market value.
Depreciator → It is formed from "de-" (meaning down or away) and "pretium" (meaning price or value) and the suffix "-ator" (meaning one who does). The word "depreciator" refers to one who reduces the value or price of something.
Think of someone who brings the value 'down' ('de-') — that's why a depreciator is someone who decreases value.