- anaesthetise (non-Oxford British spelling)
- anæsthetize (archaic spelling)
- anesthetise (non-standard non-Oxford British spelling) (very dubious)
- (transitive) To administer anesthesia to: to render unfeeling or unconscious through the use of narcotic substances, usually either alcohol or pharmaceutical drugs.
- Just prior to surgery the doctor will anesthetize him and he will sleep for four hours.