pithiatism
/ˈpɪθɪətɪz(ə)m/Psychology. Now chiefly historical
noun
A form of hysteria or hysterical symptom which is curable by persuasive suggestion; the treatment of hysteria by this means.
Origin
Early 20th century. From French pithiatisme from ancient Greek πειθώ persuasion + ἰατός curable + French -isme.