what kind of person

what age, how old

how old are you?

kanji not approved for regular use

Kanji characters outside of the jōyō kanji and jinmeiyō kanji lists. For example, 攪.

kanji approved for use in names registered in the 戸籍(こせき) (koseki, “family register”)

the left "heart" radical (忄), e.g. 情

(calculus) partial differential equation

(literary, attributive) a state of pure naturality, free from artifice