洗せん剤ざいせんざいCommon word›JLPTN3›Freq.FrequencyTop 20,000Meanings1noundetergent; cleanser; cleaning agentGeneral term for synthetic cleaning products used for laundry, dishes, or household cleaning. Often contrasted with 石けん (soap).洗せん濯たくには液えき体たい洗せん剤ざいを使