natural

(philosophy, law) natural law

(physics) equilibrium length (length of a spring, etc. at rest)

naturalists (as a group) or naturalist (individual), promoting a closer connection with nature (lifestyle, food, etc.)

spontaneous combustion

to spontaneously combust

natural right

Kyūjitai form of 身体 (“body”)

ease in one's body, relaxation / establishing oneself in the world, making a career for oneself

I (personal pronoun), formerly addressing to equal or inferior, archaic, often with humorous intent