nepeta Syllabification: (nep·e·ta)Pronunciation: /nəˈpētə/Definition of nepeta noun a plant of a genus that includes catnip and several kinds cultivated for their spikes of blue or violet flowers. Genus Nepeta, family Labiatae Origin:modern Latin, from Latin nepeta 'calamint' (formerly in this genus)nepeta in other Oxford dictionaries Definition of nepeta in the British & World English dictionary