ataractic

Latin [Term?], from Ancient Greek ἀτάρακτος (atáraktos, “intrepid”).

ataractic (comparative more ataractic, superlative most ataractic)

1. (pharmacology) That has a tranquilizing effect.
   • 2013, Einar Kringlen, Heredity and Environment in the Functional Psychoses, Elsevier, →ISBN, page 180:

     Later on he was treated by the same psychiatrist with ataractic drugs.

ataractic (plural ataractics)

1. (pharmacology) A drug that is used to tranquilize; a tranquilizer.

• ataraxy