c. 1600, from French épileptique, from Late Latin epilepticus, from Greek epileptikos, from stem of epilambanein "to seize" (see epilepsy). Earlier adjective was epilentic (late 14c.), from a Greek variant. As a noun from 1650s.
1. He was epileptic and refused to take medication for his condition.
2. About two in every five epileptic fits occur during sleep.