Idiopathy \Id`i*op"a*thy\, n.; pl. {Idiopathies}. [Gr. ?; ? proper, peculiar + ?, ?, to suffer: cf. F. idiopathie.] 1. A peculiar, or individual, characteristic or affection. All men are so full of their own fancies and idiopathies, that they scarce have the civility to interchange any words with a stranger. --Dr. H. More. 2. (Med.) A morbid state or condition not preceded or occasioned by any other disease; a primary disease.