purity
n.
c.1200, from Old French purete "simple truth," earlier purte (12c., Modern French pureté), from Late Latin puritatem (nominative puritas) "cleanness, pureness," from Latin purus "clean, pure, unmixed; chaste, undefiled" (see pure, adj.).
〔蒋〕[pur纯净,-ity名词后缀,表示性质] 纯净,洁净,纯正