MadmanA person who suffers from severe mental illness
Definitions:
A mentally ill person.
ParanoiaUnjustified suspicion and mistrust of other people
Definitions:
A tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others
DelusionA strongly held belief despite superior evidence to the contrary
Definitions:
A false belief that is resistant to confrontation with actual facts
InsanityState of being seriously mentally ill
Definitions:
The state of being seriously mentally ill; madness
HallucinationPerception in the absence of external stimulus that has qualities of real perception
Definitions:
An experience involving the apparent perception of something not present