Medicine/Medical . general or local insensibility, as to pain and other sensation, induced by certain interventions or drugs to permit the performance of surgery or other painful procedures.

Pathology . general loss of the senses of feeling, as pain, heat, cold, touch, and other less common varieties of sensation.

Psychiatry . absence of sensation due to psychological processes, as in conversion disorders.

noun

asleep , insentience , numbness , put under , stupor , unconsciousness