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View synonyms for

ascertain

[ as-er-teyn ]

verb (used with object)

  1. to find out definitely; learn with certainty or assurance; determine:

    to ascertain the facts.

  2. Archaic. to make certain, clear, or definitely known.


ascertain

/ ˌæəˈٱɪ /

verb

  1. to determine or discover definitely
  2. archaic.
    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
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Derived Forms

  • ˌˈٲԲ, adjective
  • ˌˈٲԳԳ, noun
  • ˌˈٲԲ, adverb
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Other Word Forms

  • c·ٲa· adjective
  • c·ٲa· adverb
  • c·ٲİ noun
  • c·ٲmԳ noun
  • ԴDza··ٲa· adjective
  • ԴDza··ٲa··ness noun
  • ԴDza··ٲa· adverb
  • ԴDza··ٲmԳ noun
  • a··ٲ verb (used with object)
  • a··ٲment noun
  • ܲa··ٲa· adjective
  • ܲa··ٲa· adverb
  • ܲa··ٲԱ adjective
  • ɱ-c·ٲԱ adjective
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Word History and Origins

Origin of ascertain1

First recorded in 1400–50; late Middle English, variant of acertain, assertain, from Middle French acertain-, stem of acertener “to make certain”; equivalent to a- 5 + certain
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Word History and Origins

Origin of ascertain1

C15: from Old French acertener to make certain
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Example Sentences

Examples have not been reviewed.

Her body was so badly decomposed that pathologists could not ascertain the cause of death.

From

The Times was unable to ascertain who wrote this draft order or how seriously it was being considered but it was obviously something that was under consideration.

From

She said a separate independent review into the attack would "ascertain how this incident was able to happen, what more must be done to protect prison staff and, more widely, how separation centres are run".

From

Airlines and engine manufacturers had to conduct research to ascertain if there was a safe level of ash concentration which wouldn't damage jet engines.

From

To ascertain the current status of the work, ProPublica hired a reporter to visit the air base on Friday.

From

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When To Use

are other ways to say ascertain?

To ascertain something is to determine it or learn it with certainty or assurance. How is ascertain different from the learn, discover, and detect? Find out on .

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