逆性石鹸 ぎゃくせいせっけん Also written 逆性石けん Meanings Noun cationic soap; invert soap; positive soap Kanji 逆 reverse. Read as ギャク. 性 nature. Read as セイ. 石 stone. Read as セキ. 鹸 saltiness. Read as ケン. Jinuma: Japanese Dictionary · Word lists