Where does “bumfoolery” come from?

bumfoolery (English) comes from English bum, from German Bummler, from German -er, from Old High German -āri, from Proto-West Germanic -ārī, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

bumfoolery (English): Messing about, often in a homosexual way

Definitions

  1. Messing about, often in a homosexual way

Ancestry of “bumfoolery”, step by step

bumfoolery traces back through two separate lines of ancestry.

via English bum

StepLanguageWordMeaning
1EnglishbumThe buttocks; The anus; To sodomize; to engage in...
2GermanBummlerstroller; laggard; idler, loafer
3German-erForms agent nouns etc. from verbs, suffixed to...
4Old High German-āriused to form agent nouns
5Proto-West Germanic-ārī-er
6Proto-Germanic-ārijaz-er
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

via English tomfoolery

StepLanguageWordMeaning
1EnglishtomfooleryFoolish behaviour or speech; jewellery
2EnglishtomThe male of the domesticated cat; The male of the...
3Middle EnglishThommeTom
4Middle EnglishThomas
5LatinThōmāsThomas the Apostle
6Ancient GreekΘωμᾶςThomas
7Aramaicתאומאtwin; Thomas
8Aramaicתאמאtwin, double; Gemini
Every word from Proto-Italic *-āzios