from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Serenely deliberate, composed, and dignified in character or manner. See Synonyms at serious.
  • transitive v. To administer a sedative to; calm or relieve by means of a sedative drug.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. in a composed and temperate state.
  • v. to tranquilize by giving a sedative; to calm; to soothe; to induce sleep.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Undisturbed by passion or caprice; calm; tranquil; serene; not passionate or giddy; composed; staid.

from The Century Dictionary and Cyclopedia

  • Quiet; composed; placid; serene; serious; undisturbed by passion: as, a sedate temper or deportment.
  • Synonyms Imperturbable, serious, staid.
  • To calm; compose.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. characterized by dignity and propriety
  • v. cause to be calm or quiet as by administering a sedative to
  • adj. dignified and somber in manner or character and committed to keeping promises


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin sēdātus, past participle of sēdāre, to settle, calm; see sed- in Indo-European roots.
Back-formation from sedative and sedation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin sedatum, past participle of sedare ("to settle"), causative of sedere ("to sit").


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