正
セイ, ショウ, ただ.しい, ただ.す, まさ, まさ.に, おお, くに, ま, まさし, ただし

correct, justice, righteous, 10**40

JLPT4 G1 S5 F143

止# (stand straight) + a line → straight line → *punctual*; *right*; *correct*; *straighten*; *proper* (← abstract applications of the idea of straightness/uprightness; compare 是) → *surely*; *certainly*.

[Full Kanji Etymology List]