: having or relating to a very serious mental illness that makes you act strangely or believe things that are not true : relating to or suffering from psychosis
psychotic behavior/symptoms
psychotic patients
He was diagnosed as psychotic.
plural psychotics
: a person who suffers from a very serious mental illness : a psychotic person
His father is a psychotic.
Cite this Entry
“Psychotic.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/psychotic. Accessed 21 Jun. 2026.
Copy Citation
