adj.
Pronunciation: ˌ i-d ē - ə - ' pa-thik
Function: adjective
Date: 1669
1 : arising spontaneously or from an obscure or unknown cause : PRIMARY < idiopathic epilepsy>
2 : peculiar to the individual
– id · i · o · path · i · cal · ly \ - ' pa-thi-k( ə -)l ē \ adverb