genitive (adj.) Look up genitive at Dictionary.com
late 14c., from Old French genitif or directly from Latin (casus) genitivus "case expressing possession, source, origin," from genitus (past participle of gignere; see genital); misused by Latin grammarians to render Greek genike (ptosis) "generic (case)," expressing race or kind (see genus). The noun meaning "the genitive case in grammar" is from 1610s.