calm, quiet, or composed; undisturbed by passion or excitement: a sedate party; a sedate horse.

verb (used with object), se·dat·ed, se·dat·ing.

to put (a person) under sedation.

Nearby words

  1. sed,
  2. sedalia,
  3. sedan,
  4. sedan chair,
  5. sedarim,
  6. sedately,
  7. sedation,
  8. sedative,
  9. seddon,
  10. sedecias

Origin of sedate

1640–50; < Latin sēdātus (past participle of sēdāre to allay, quieten); akin to sedēre to sit1

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sedate

British Dictionary definitions for sedate




habitually calm and composed in manner; serene
staid, sober, or decorous
Derived Formssedately, adverbsedateness, noun

Word Origin for sedate

C17: from Latin sēdāre to soothe; related to sedēre to sit


(tr) to administer a sedative to

Word Origin for sedate

C20: back formation from sedative

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sedate
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for sedate




To administer a sedative to; calm or relieve by means of a sedative drug.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.