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