弱冠

From the Book of Rites, Book 1 (《禮記·曲禮上》):

人生十年曰幼，學。二十曰弱，冠。三十曰壯，有室。……百年曰期，頤。

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人生十年曰幼，学。二十曰弱，冠。三十曰壮，有室。……百年曰期，颐。

From: The Book of Rites, c. 4^th – 2^nd century BCE, translated based on James Legge's version

Rén shēng shí nián yuē yòu, xué. Èrshí yuē ruò, guàn. Sānshí yuē zhuàng, yǒu shì....... Bǎinián yuē qī, yí.

When one is ten years old, we call him a boy; he goes (out) to school. When he is twenty, we call him a youth; he is capped. When he is thirty, we say, 'He is at his maturity;' he has a wife. At a hundred, he is called a centenarian, and has to be fed.

弱冠

1. (literary) the approach of adulthood (20 years of age)

From Literary Chinese. From 禮記/曲禮上.

• (Tokyo) じゃっかん (Heiban – )
• IPA^(key):

弱(じゃっ)冠(かん) • (jakkan) ^{←じやくくわん (zyakukwan)?}

1. 20 years of age
2. youth

弱冠 • (yakgwan) (hangeul 약관)

1. hanja form^? of 약관 (“20 years of age”)