Where does “bah humbug” come from?

bah humbug (English) comes from English humbug, from English hummer, from English -er, from Middle English -er, from Old French -er, from Latin -āre, from Proto-Italic -āō, from Proto-Indo-European -eh₂yéti — he, she.

bah humbug (English): 1848 January 22, “Important Official Documents”,...

Definitions

  1. 1848 January 22, “Important Official Documents”,...

Ancestry of “bah humbug”, step by step

bah humbug traces back through two separate lines of ancestry.

via English humbug

StepLanguageWordMeaning
1EnglishhumbugA hoax, jest, or prank
2EnglishhummerOne who hums; A Humvee; A type of vehicle...
3English-erA person or thing that does an action indicated...
4Middle English-eragentive suffix; agent noun suffix
5Old French-erAlternative form of -ier, verbal suffix;...
6Latin-ārefirst conjugation
7Proto-Italic-āōForms primarily denominative verbs
8Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
9Proto-Indo-European-yétiCreates intransitive, often deponent,...
10Proto-Indo-Europeanyé-
11Chichewaiyehe, she

via English bah

StepLanguageWordMeaning
1Englishbah1992, April Kihlstrom, Dangerous...
2FrenchbahNo; well, err, um
Every word from Chichewa iyeEvery word from English -erEvery word from Proto-Indo-European -yéti