Where does “胸を張る” come from?

胸を張る (Japanese) comes from Japanese 胸, from Japanese い, from Japanese や, from Japanese じゃ, from Japanese である, from Japanese で, from Japanese ぜ, from Japanese ぞえ.

胸を張る (Japanese): to throw out one's chest; to be puffed up with pride

Definitions

  1. to throw out one's chest; to be puffed up with pride

Ancestry of “胸を張る”, step by step

胸を張る traces back through 3 separate lines of ancestry.

via Japanese 胸

StepLanguageWordMeaning
1Japanese胸chest, breast; heart, inner thoughts; bosom,...
2JapaneseいUsed in compounds with certain sentence-ending...
3Japaneseやand/or; is, are; Alternative form of いや
4Japaneseじゃso, then—used for connecting to a reasonable...
5JapaneseであるTo be: the copula, with the same function as だ and its polite form です
6Japaneseでat; with, by, using; indicating the following...
7Japaneseぜsentence-ending particle signifying emphasis,...
8Japaneseぞえ­ sentence-ending particle signifying emphasis, used to lightly press one's point, with affectionate overtones
9JapaneseえAlternative form of い
10Middle Chinese衣—

via Japanese を

StepLanguageWordMeaning
1JapaneseをA case particle; A conjunctive particle, usually...
2Proto-Japonicwoaccusative marker; away from, off

via Japanese 張る

StepLanguageWordMeaning
1Japanese張るspread, fill; swell; put up, spread
Every word from Middle Chinese 衣 →Every word from Japanese え →Every word from Japanese ぞえ →