存ずる
ぞんずる · zonzuru · JLPT N2 · noun
know
存ずる = 存 (keep, exist) + ずる (do): keep it on hand = humbly know
存 means to keep or preserve, so 存ずる is an old humble verb for holding something as kept on hand in your awareness. Modern 存じる uses the same root.
存 — 才 (talent/sprout) + 子 (child)
Originally written with 才 (a sprout breaking ground) over 子 (child), suggesting a child being raised or kept alive. The character came to mean 'to exist, to remain, to preserve.' Modern uses like 存在 (exist) and 保存 (preserve) reflect this core sense of continued being.