誠
セイ, まこと, きよ, さと, しげ, とも, のぶ, ま, まこ, まさ

sincerity, admonish, warn, prohibit, truth, fidelity

JLPT1 G6 S13 F1128

As per 成# (straight) + 言 words → words straight from the heart → *sincerity*; *honesty*; *integrity*; *fidelity*; *truth*.

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