存
ソン, ゾン, まさ

suppose, be aware of, believe, feel

JLPT3 G6 S6 F577

The relevant seal inscription form combines an abbreviated form# of 在 exist + 子 child → *existence* represented by children/descendants (compare 孫)→ *keep*/settle (in place) (← maintain existence) → *know* (← have knowledge of what exists).

[Full Kanji Etymology List]