quietantn.
/ˈkwʌɪt(ə)nt/, U.S. /ˈkwaɪətnt/ Medicine. Now disused.
A drug used as a sedative or muscle relaxant.
ΘΚΠ
the world > health and disease > healing > medicines or physic > medicines for specific purpose > sedatives, antispasmodics, etc. > [noun] > tranquillizer
settle-brain1629
tranquillizer1800
quietener1856
calmative1870
quietant1874
ataractic1955
neuroleptic1959
downer1966
trank1967
1874 H. C. Wood Treat. Therapeutics 293 As a nocturnal quietant and hypnotic, it would appear to offer very great advantages.
1908 Lancet 8 Feb. 410/1 Hyoscine itself is too powerful a drug for habitual use, but in the violent excitement of the insane may be invaluable as a muscle quietant.
1917 Jrnl. Amer. Inst. Criminal Law & Criminol. 8 502 Cocaine or heroin supplies the stimulant, and morphine, or heroin, curiously enough, the quietant.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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n.1874