Where does “filial piety” come from?

filial piety (English) comes from English piety, from Middle English piete, from Middle French pieté, from Latin pietas, from Latin pīus, from Latin -tās, from Proto-Indo-European -teh₂ts, from Proto-Indo-European -teh₂ — Creates verbal adjectives from verb stems.

filial piety (English): The virtue of showing respect and doing good deeds for one's parents, elders, and ancestors, as understood in Confucian ethics and commonly observed in the Sinosphere

Definitions

  1. The virtue of showing respect and doing good deeds for one's parents, elders, and ancestors, as understood in Confucian ethics and commonly observed in the Sinosphere

Ancestry of “filial piety”, step by step

filial piety traces back through two separate lines of ancestry.

via English piety

StepLanguageWordMeaning
1EnglishpietyReverence and devotion to God; Similar reverence...
2Middle Englishpietemercifulness, compassion, sympathy
3Middle Frenchpietépiety
4LatinpietasDutiful conduct, sense of duty; Piety,...
5Latinpīus
6Latin-tāsty, -dom, -hood, -ness, -ship
7Proto-Indo-European-teh₂tsUsed to form nouns representing state of being
8Proto-Indo-European-teh₂Used to form nouns representing state of being
9Proto-Indo-European-tósCreates verbal adjectives from verb stems

via English filial

StepLanguageWordMeaning
1EnglishfilialPertaining to or befitting a son or daughter;...
2Middle Englishfilial
3LatinfilialisFilial; of or pertaining to a son or daughter
4Latinfiliadaughter; any female offspring
5Latinfiliusa son; any male descendant; children
6Old Latinfiliosson; accusative plural of fīlius
7Proto-Italicfeiljosson
8Proto-Indo-Europeandʰeh₁yliossucker
9Proto-Indo-Europeandʰeh₁(y)-to suckle, nurse
Every word from Proto-Indo-European -tós