[ as-er-teyn ]
/ ˌæs ərˈteɪn /
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verb (used with object)
to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
Archaic. to make certain, clear, or definitely known.
ALL IN FAVO(U)R OF THIS BRITISH VS. AMERICAN ENGLISH QUIZ
There's an ocean of difference between the way people speak English in the US vs. the UK. Are your language skills up to the task of telling the difference? Let's find out!
Question 1 of 7
True or false? British English and American English are only different when it comes to slang words.
Origin of ascertain
OTHER WORDS FROM ascertain
as·cer·tain·a·ble, adjectiveas·cer·tain·a·bly, adverbas·cer·tain·er, nounas·cer·tain·ment, noun
non·as·cer·tain·a·ble, adjectivenon·as·cer·tain·a·ble·ness, nounnon·as·cer·tain·a·bly, adverbnon·as·cer·tain·ment, nounpre·as·cer·tain, verb (used with object)pre·as·cer·tain·ment, nounun·as·cer·tain·a·ble, adjectiveun·as·cer·tain·a·bly, adverbun·as·cer·tained, adjectivewell-as·cer·tained, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ascertain in a sentence
For the purpose of ascertaining the Board's powers in this connection the opinion of the Attorney General has been requested.Readings in Money and Banking|Chester Arthur Phillips
Ascertaining what had happened, some went to the church, and the governor arrested others.
Meurin had special facilities for ascertaining how men diabolise; the island of Mauritius has enjoyed many privileges of Infernus.Devil-Worship in France|Arthur Edward Waite
At least, we can come a good deal nearer ascertaining the latter than the former.Taboo and Genetics|Melvin Moses Knight, Iva Lowther Peters, and Phyllis Mary Blanchard
During the passage, which lasted seven weeks, Newton had ample opportunity of ascertaining his situation.Newton Forster|Captain Frederick Marryat
British Dictionary definitions for ascertain
/ (ˌæsəˈteɪn) /
to determine or discover definitely
archaic to make certain
Derived forms of ascertainascertainable, adjectiveascertainably, adverbascertainment, noun
Word Origin for ascertain
C15: from Old French acertener to make certain
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