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Antonyms for ascertain


Grammar : Verb
Spell : as-er-teyn
Phonetic Transcription : ˌæs ərˈteɪn



Definition of ascertain

Origin :
  • early 15c., "to inform, to give assurance," from Anglo-French acerteiner, Old French acertener "to assure, certify" (13c.), from a "to" (see ad-) + certain "certain" (see certain). Modern meaning of "find out for sure by experiment or investigation" is first attested 1794. Related: Ascertained; ascertaining.
  • verb make sure
Example sentences :
  • All efforts to ascertain your fate proved utterly fruitless.
  • Extract from : « Philothea » by Lydia Maria Child
  • We did not ascertain this last fact, however, for some time.
  • Extract from : « Ned Myers » by James Fenimore Cooper
  • There was a thick fog, so that it was impossible to ascertain what advantage had been gained.
  • Extract from : « The Life of Horatio Lord Nelson » by Robert Southey
  • Is it to ascertain this point that you have done me the honour to visit me?
  • Extract from : « Alice, or The Mysteries, Complete » by Edward Bulwer-Lytton
  • They appraised me in their own minds, I saw, and were curious to ascertain what my full value was.
  • Extract from : « Little Dorrit » by Charles Dickens
  • Mouldings are often the surest guides in helping us to ascertain the date of a building.
  • Extract from : « English Villages » by P. H. Ditchfield
  • Then it is my business to ascertain, if I can, how it did get out of it.
  • Extract from : « The Channings » by Mrs. Henry Wood
  • Why they were planted in churchyards it is difficult to ascertain.
  • Extract from : « English Villages » by P. H. Ditchfield
  • I have just looked at myself in the glass to ascertain the fact, and I do not know how to decide.
  • Extract from : « Reflections » by Francois Duc De La Rochefoucauld
  • Madame Theodore had bent down to ascertain if he still lived.
  • Extract from : « The Three Cities Trilogy, Complete » by Emile Zola

Synonyms for ascertain

Based on : Thesaurus.com - Gutenberg.org - Dictionary.com - Random House Unabridged Dictionary, © Random House, Inc. 2019