賢
ケン, かしこ.い, かた, さか, さと, さとし, たか, たて, のり, まこと, まさ, まさる

intelligent, wise, wisdom, cleverness

JLPT2 G7 S16 F1159

As per 臤# (adhere) + 貝 commodities → tightly packed collection of valuable goods → estimable (← goods worthy of esteem) → *wisdom*/*intelligence* (← wise enough to evaluate properly).

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