A symptom of catatonic schizophrenia. The person is nearly or completely unresponsive to stimuli and remains immobile for long periods of time.
Example: A schizophrenic man stands stock-still near his bed. When a psychiatrist lifts the man’s arm, it remains in the exact same position for hours after she lets go.
Grinnell, R. (2016). Waxy Flexibility. Psych Central. Retrieved on September 22, 2016, from http://psychcentral.com/encyclopedia/waxy-flexibility/