貞
テイ, さだ, さざ, ただし, りょう

upright, chastity, constancy, righteousness

JLPT1 G7 S9 F1389

The relevant bronzeware inscription form is 卜 divination + an abbreviated form# of 鼎 tripod kettle/cauldron → inspect smoke rising from an upright vessel to divine the future → *rectitude* (← upright) → *righteous*; *chastity*.

[Full Kanji Etymology List]