from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to a drug or other agent that has a tranquilizing effect.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. That has a tranquilizing effect
- n. A drug that is used to tranquilize; a tranquilizer.
from the GNU version of the Collaborative International Dictionary of English
- adj. tending to soothe or calm or tranquilize.
- n. drug that reduces nervous tension and gives peace of mind.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a drug used to reduce stress or tension without reducing mental clarity
- adj. tending to soothe or tranquilize
From Greek ataraktos, undisturbed : a-, not; see a-1 + taraktos, disturbed (from tarassein, tarak-, to disturb).(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin, from Ancient Greek ἀτάρακτος (ataraktos, "intrepid"). (Wiktionary)