(Internet slang) person who doesn't hesitate to commit crimes, because they have nothing to lose socially

(historical) person from Satsuma (modern Kagoshima)

civilian (non-military person)

witness; observer

a Levite (member of the Hebrew tribe of Levi)

contractor

one who acts freely, relatively unbound by societal norms

leper

(mathematics) geometrical

"Historical kana usage", a prescriptive method of using kana to write Japanese. Devised in the Edo period by Keichū (契沖) and taught in schools until 1946, it aims to be etymologically faithful and reflects earlier stages of the language (Heian period and earlier).