Ascertain Definition and Meaning
By Tayyaba Rehman & Maham Liaqat — Published on March 31, 2025
Ascertain means to find out or learn with certainty. e.g., The detective worked hard to ascertain the truth behind the mysterious case.
Table of Contents
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Ascertain Definitions
To find out something by examining or researching.
Scientists are trying to ascertain the cause of the outbreak.
To derive as a conclusion from facts or premises.
From the evidence, the detective was able to ascertain who the culprit was.
To determine the nature of a problem or disease.
The doctor ascertained the patient's condition after several tests.
To check or test something to confirm its validity.
The team is working to ascertain the reliability of the new software.
To find out definite or reliable information about something.
The historian ascertained key facts about the ancient civilization.
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To recognize or establish what something is.
The researchers ascertained the species of the rare bird through DNA analysis.
To ensure that something is definitely true or accurate.
We need to ascertain that all information is correct before we proceed.
To come to a decision or conclusion about something.
The jury is tasked with ascertaining the defendant's guilt or innocence.
To give approval or sanction to something after ensuring its truth.
The results of the experiment helped to ascertain the hypothesis.
To gain accurate or detailed knowledge about something.
She ascertained the exact dimensions of the room for the renovation.
To discover with certainty, as through examination or experimentation.
(Archaic) To make certain, definite, and precise.
To find out definitely; to discover or establish.
As soon as we ascertain what the situation is, we can plan how to proceed.
(obsolete) To make (someone) certain or confident about something; to inform.
(archaic) To establish, to prove.
(archaic) To ensure or effect.
To render (a person) certain; to cause to feel certain; to make confident; to assure; to apprise.
When the blessed Virgin was so ascertained.
Muncer assured them that the design was approved of by Heaven, and that the Almighty had in a dream ascertained him of its effects.
To make (a thing) certain to the mind; to free from obscurity, doubt, or change; to make sure of; to fix; to determine.
The divine law . . . ascertaineth the truth.
The very deferring [of his execution] shall increase and ascertain the condemnation.
The ministry, in order to ascertain a majority . . . persuaded the queen to create twelve new peers.
The mildness and precision of their laws ascertained the rule and measure of taxation.
To find out or learn for a certainty, by trial, examination, or experiment; to get to know; as, to ascertain the weight of a commodity, or the purity of a metal.
He was there only for the purpose of ascertaining whether a descent on England was practicable.
After a calculation, investigation, experiment, survey, or study;
Find the product of two numbers
The physicist who found the elusive particle won the Nobel Prize
Be careful or certain to do something; make certain of something;
He verified that the valves were closed
See that the curtains are closed
Control the quality of the product
Find out, learn, or determine with certainty, usually by making an inquiry or other effort;
I want to see whether she speaks French
See whether it works
Find out if he speaks Russian
Check whether the train leaves on time
Learn or discover with certainty
Ascertain Snonyms
Verify
To make sure or demonstrate that something is true, accurate, or justified.
The accountant verified the financial records for any discrepancies.
Uncover
To reveal or bring to light something that was previously hidden.
The journalist uncovered a major scandal through her investigation.
Determine
To come to a decision or conclusion about something.
He determined the root cause of the issue after extensive testing.
Find out
To obtain knowledge or information about something.
She found out the truth about the incident after talking to several witnesses.
Discover
To find out something previously unknown.
They discovered a hidden room in the old mansion during the renovation.
Identify
To ascertain the identity of something or someone.
The witness was able to identify the suspect from the lineup.
Diagnose
To determine the nature of a problem or disease.
The mechanic diagnosed the issue with the car as a faulty starter.
Establish
To demonstrate the validity or truth of something.
The study established a clear link between diet and health.
Confirm
To establish the truth or correctness of something.
The DNA test confirmed his suspicions about his ancestry.
Learn
To acquire knowledge or skill through study or experience.
She learned a lot about local history during her trip.
Ascertain Example Sentences
The team worked hard to ascertain the best approach for the project.
She ascertained that all doors were locked before leaving the house.
To ascertain the truth, they interviewed multiple witnesses.
He needed to ascertain the compatibility of the two systems before integration.
It took her a while to ascertain the real intentions behind his gestures.
To ascertain her eligibility, they checked all her documents thoroughly.
Common Curiosities
Why is it called "ascertain"?
"Ascertain" comes from the Old French "acertener," meaning "to assure, make sure," which itself is derived from the Latin "certus," meaning "certain."
How many syllables are in "ascertain"?
"Ascertain" has three syllables.
How is "ascertain" used in a sentence?
"Ascertain" is used to describe the action of finding out something with certainty, e.g., The investigator aimed to ascertain the facts of the case.
What is the second form of "ascertain"?
The second form of "ascertain" is "ascertained," which is the simple past tense of the verb.
What is the verb form of "ascertain"?
"Ascertain" itself is a verb. Its forms include "ascertains" (present), "ascertained" (past), and "ascertaining" (present participle).
What is the third form of "ascertain"?
The third form of "ascertain" is also "ascertained," used as the past participle in perfect tenses.
How do we divide "ascertain" into syllables?
"Ascertain" is divided into syllables as "as-cer-tain."
What is a stressed syllable in "ascertain"?
The stressed syllable in "ascertain" is the second one: "cer."
What is the pronunciation of "ascertain"?
"Ascertain" is pronounced as /ˌæs.əˈteɪn/.
What part of speech is "ascertain"?
"Ascertain" is a verb.
What is the plural form of "ascertain"?
"Ascertain" does not have a plural form as it is a verb; its use does not change with the number of subjects or objects.
Is "ascertain" an adverb?
No, "ascertain" is not an adverb; it is a verb.
Is "ascertain" an abstract noun?
"Ascertain" is not a noun; it is a verb. However, the related noun "ascertainment" could be considered abstract as it refers to the act or process of ascertaining.
What is the root word of "ascertain"?
The root word of "ascertain" is the Latin "certus," meaning "certain" or "sure."
What is the first form of "ascertain"?
The first form of "ascertain" is "ascertain," which is the base form or the infinitive form of the verb.
What is the singular form of "ascertain"?
The singular form is "ascertain." As a verb, it does not change form based on number.
What is the opposite of "ascertain"?
The opposite of "ascertain" might be "assume" or "guess," implying a lack of certainty.
Is the "ascertain" term a metaphor?
"Ascertain" can be used metaphorically in contexts where the act of finding out or discovering something is not literal but figurative.
Is the word “ascertain” a Direct object or an Indirect object?
"Ascertain" is a verb, and it can have a direct object in sentences, e.g., "He ascertained the facts."
Which determiner is used with "ascertain"?
Determiners are not typically used directly with "ascertain" since it is a verb. However, determiners can be used with the objects of "ascertain," e.g., "ascertain the truth."
Is "ascertain" a negative or positive word?
"Ascertain" is neutral; it does not inherently carry a positive or negative connotation.
What is another term for "ascertain"?
Another term for "ascertain" could be "determine" or "find out."
Is "ascertain" a vowel or consonant?
The word "ascertain" starts with a vowel 'a'.
Is "ascertain" a countable noun?
"Ascertain" is not a noun; it is a verb, so the concept of being countable or uncountable does not apply.
Is "ascertain" a collective noun?
No, "ascertain" is a verb and not a noun, so it cannot be a collective noun.
Which vowel is used before "ascertain"?
The use of vowels before "ascertain" depends on the context; there is no specific rule.
Is the word "ascertain" imperative?
"Ascertain" can be used in the imperative form, as in giving a command or instruction, e.g., "Ascertain the truth before proceeding."
Which preposition is used with "ascertain"?
Prepositions like "about," "of," and "from" can be used with "ascertain," depending on the context, e.g., "ascertain about the situation," "ascertain the truth of the matter," "ascertain information from the data."
Is "ascertain" a noun or adjective?
"Ascertain" is a verb, not a noun or adjective.
Is the word "ascertain" a Gerund?
"Ascertaining" is the gerund form of "ascertain."
Which conjunction is used with "ascertain"?
Conjunctions like "and," "but," and "or" can be used with "ascertain," depending on the sentence structure, e.g., "ascertain and verify," "ascertain but consider," "ascertain or assume."
Which article is used with "ascertain"?
Articles are not typically used directly with "ascertain" since it is a verb. However, articles can be used with the objects of "ascertain," e.g., "ascertain the details," "ascertain a fact."
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Written by
Tayyaba RehmanTayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
Co-written by
Maham Liaqat
