痼こ疾しつこしつMeanings1nounchronic disease; chronic illnessFormal or literary term for a long-standing, difficult-to-cure disease. In everyday speech, 慢性疾患 (まんせいしっかん) is more common.彼かれは長なが年ねん、痼こ疾しつに苦くるしんでいる。He has been suffering from a chronic disease for many years.
