KanjiJLPT N1
Precious

precious, value, prize, esteem, honor

Mnemonic

Inside a locked chest sits one single piece of money so ancient it's considered precious beyond all measure. Kings have waged wars over this one coin of money kept inside, for nothing in the realm is more precious.
Additional thoughts
Visualize a glowing coin sealed inside a chest—just one piece of money, yet priceless. The kanji stacks neatly: inside (中) on top, one (一) in the middle, money (貝) at the bottom, forming a tower of value.
Quick recall
One piece of money hidden inside a chest is precious beyond measure.

Details

The keyword for 貴 is precious. This kanji conveys the idea of something being valuable, noble, or highly esteemed. It is used to express worth, dignity, and high social standing, often referring to things or people that are regarded with great respect and reverence. In both literal and figurative senses, it captures the notion of something rare and treasured that commands admiration.
On'yomi
Kun'yomi
たっと.い、とうと.い、たっと.ぶ、とうと.ぶ