陰性いんせい Common Noun Noun English jmdict 1 nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi) negative (result) Antonym: 陽性 (ようせい) ツベルクリン反応は陰性でした。 The result of the tuberculin test was negative. 2 adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'noun (common) (futsuumeishi) gloomy;negative (e.g. attitude);pessimistic