unsedative

sedative

[sed-uh-tiv]
adjective
1.
tending to calm or soothe.
2.
allaying irritability or excitement; assuaging pain; lowering functional activity.
noun
3.
a sedative drug or agent.

Origin:
1375–1425; late Middle English (adj.) (< Middle French sédatif) < Medieval Latin sēdātīvus, equivalent to Latin sēdāt(us) (see sedate) + -īvus -ive

unsedative, adjective
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World English Dictionary
sedative (ˈsɛdətɪv)
 
adj
1.  having a soothing or calming effect
2.  of or relating to sedation
 
n
3.  med a sedative drug or agent
 
[C15: from Medieval Latin sēdātīvus, from Latin sēdātus assuaged; see sedate1]

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Etymonline
Word Origin & History

sedative
"tending to calm or soothe," early 15c., from M.L. sedativus "calming, allaying," from pp. stem of sedare (see sedate). The noun derivative meaning "a sedative drug" is attested from 1785.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

sedative sed·a·tive (sěd'ə-tĭv)
adj.
Having a soothing, calming, or tranquilizing effect; reducing or relieving anxiety, stress, irritability, or excitement. n.
An agent or a drug that produces a soothing, calming, or tranquilizing effect.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
sedative   (sěd'ə-tĭv)  Pronunciation Key 
A drug having a calming or quieting effect, often given to reduce anxiety or to promote relaxation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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