injustice
n.
late 14c., from Old French injustice, from Latin injustitia "injustice," from injustus "unjust, wrongful, oppressive," from in- "not" (see in-(1)) + justus "just" (see just, adj.).
〔李〕[in-=lack of无；justice n.正义→] n. lack of justice；being unjust 非正义；不公正