Where does “buzzkiller” come from?

buzzkiller (English) comes from English killer, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō, from Proto-Indo-European -eh₂yéti, from Proto-Indo-European -yéti — he, she.

Ancestry of “buzzkiller”, step by step

buzzkiller traces back through two separate lines of ancestry.

via English killer

StepLanguageWordMeaning
1EnglishkillerOne who or that which kills; That which causes...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she

via English buzz

StepLanguageWordMeaning
1EnglishbuzzA continuous, humming noise, as of bees; a...
Every word from Chichewa iye
buzzkiller — Etymology, Origin & Word History | Etymology Explorer