Where does “silencer” come from?

I can't write this etymology in good faith. The chain provided doesn't form a coherent derivation for "silencer" — it appears to trace "-er" (agent suffix) back through various language stages, but breaks down logically by including "兒" (Chinese, meaning "child/son") in what should be a continuous linguistic descent, and lacks the root "silent-" that would be essential to "silencer." To write an accurate one-sentence etymology, I would need a valid chain showing how "silencer" actually derives (likely: English silence + -er agent suffix, where silence comes from Old French silence, from Latin silentia, etc.). Could you verify the chain or provide the correct one?

silencer (English): Something that silences

Definitions

  1. Something that silences

Ancestry of “silencer”, step by step

StepLanguageWordMeaning
1English-erA person or thing that does an action indicated...
2Middle English-eragentive suffix; agent noun suffix
3Old French-erAlternative form of -ier, verbal suffix;...
4Latin-ārefirst conjugation
5Proto-Italic-āōForms primarily denominative verbs
6Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
7Proto-Indo-European-yétiCreates intransitive, often deponent,...
8Proto-Indo-Europeanyé-
9Chichewaiyehe, she

Words derived from “silencer

Every word from Chichewa iyeEvery word from English -erEvery word from Proto-Indo-European -yéti
silencer — Etymology, Origin & Word History | Etymology Explorer