9 letters · 18 points in Scrabble
noun any disease arising from internal dysfunctions of unknown cause
originFrom Latin idiopathia, from Ancient Greek ἰδιοπάθεια (idiopátheia). By surface analysis, idio- + -pathy. First appears c. 1634, in the publications of Philiatreus (fl. 1630).
Etymology from Wiktionary, CC BY-SA 3.0