硬性 こうせい Meanings Noun, の-adjective hardness Kanji 硬 hard. Read as コウ. 性 nature. Read as セイ. Words containing 硬性 硬性憲法 (こうせいけんぽう) rigid constitution 硬性癌 (こうせいがん) scirrhous carcinoma Jinuma: Japanese Dictionary · Word lists