Naja nigricollis Naja nigricollis antonyms If you know antonyms for Naja nigricollis, then you can share it. Suggest antonym for Naja nigricollis Naja nigricollis synonyms black-necked cobra spitting cobra cobra If you know synonyms for Naja nigricollis, then you can share it. Suggest synonym for Naja nigricollis