Where does “なんでやねん” come from?

なんでやねん (Japanese) comes from Japanese や, from Japanese じゃ, from Japanese である, from Japanese で, from Japanese ぜ, from Japanese ぞえ, from Japanese え, from Middle Chinese 衣.

なんでやねん (Japanese): what the hell! what gives!

Definitions

  1. what the hell! what gives!

Ancestry of “なんでやねん”, step by step

なんでやねん traces back through 3 separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseand/or; is, are; Alternative form of いや
2Japaneseじゃso, then—used for connecting to a reasonable...
3JapaneseであるTo be: the copula, with the same function as だ and its polite form です
4Japaneseat; with, by, using; indicating the following...
5Japanesesentence-ending particle signifying emphasis,...
6Japaneseぞえ­ sentence-ending particle signifying emphasis, used to lightly press one's point, with affectionate overtones
7JapaneseAlternative form of い
8Middle Chinese

via Japanese なんて

StepLanguageWordMeaning
1Japaneseなんてemphasizes disgust, contempt, or otherwise...
2Japaneseet cetera; rank, class, order; et cetera, that...
3Japaneseなんど何度 the number of times, how often; 等 et cetera;...
4Japanese何とetc., and so forth, and such like
5JapaneseWhat?, Huh?; what; that thing

via Japanese ねん

StepLanguageWordMeaning
1Japaneseねんused for emphasis
Every word from Middle Chinese Every word from Japanese Every word from Japanese ぞえ