ASCERTAIN Synonyms: 73 Similar and Opposite Words

Q: How does the verb 'ascertain' contrast with its synonyms?

Some common synonyms of ascertain are determine , discover , learn , and unearth . While all these words mean "to find out what one did not previously know," ascertain implies effort to find the facts or the truth proceeding from awareness of ignorance or uncertainty. // attempts to ascertain the population of the region

Q: When is 'determine' a more appropriate choice than 'ascertain'?

The meanings of determine and ascertain largely overlap; however, determine emphasizes the intent to establish the facts definitely or precisely. // unable to determine the origin of the word

Q: When would 'discover' be a good substitute for 'ascertain'?

While in some cases nearly identical to ascertain , discover may apply to something requiring exploration or investigation or to a chance encounter. // discovered the source of the river

Q: In what contexts can 'learn' take the place of 'ascertain'?

The words learn and ascertain can be used in similar contexts, but learn may imply acquiring knowledge with little effort or conscious intention (as by simply being told) or it may imply study and practice. // I learned her name only today // learning Greek

Q: When can 'unearth' be used instead of 'ascertain'?

The words unearth and ascertain are synonyms, but do differ in nuance. Specifically, unearth implies bringing to light something forgotten or hidden. // unearth old records

ascertain

verb

ˌa-sər-ˈtān

Definition of ascertain

as in to discover

to come to an awareness of was immediately able to ascertain that the girl was uncomfortable talking about her life at home

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in to find

to come upon after searching, study, or effort ascertained that their old colonial-era house had once functioned as a tavern

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How does the verb ascertain contrast with its synonyms?

Some common synonyms of ascertain are determine, discover, learn, and unearth. While all these words mean "to find out what one did not previously know," ascertain implies effort to find the facts or the truth proceeding from awareness of ignorance or uncertainty.

attempts to ascertain the population of the region

When is determine a more appropriate choice than ascertain?

The meanings of determine and ascertain largely overlap; however, determine emphasizes the intent to establish the facts definitely or precisely.

unable to determine the origin of the word

When would discover be a good substitute for ascertain?

While in some cases nearly identical to ascertain, discover may apply to something requiring exploration or investigation or to a chance encounter.

discovered the source of the river

In what contexts can learn take the place of ascertain?

The words learn and ascertain can be used in similar contexts, but learn may imply acquiring knowledge with little effort or conscious intention (as by simply being told) or it may imply study and practice.

I learned her name only today

learning Greek

When can unearth be used instead of ascertain?

The words unearth and ascertain are synonyms, but do differ in nuance. Specifically, unearth implies bringing to light something forgotten or hidden.

unearth old records

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of ascertain Who had what — or more specifically, half of what — must be ascertained before figuring in tax and tip. — Inga, San Diego Union-Tribune, 15 June 2026 One person was killed by a car bomb in Moscow's eastern suburbs early on Tuesday, the Investigative Committee of the Russian Federation announced in a statement, with an investigation now underway to ascertain the details of the incident. — David Brennan, ABC News, 9 June 2026 Screening can begin in primary care with shoes-off exams, when damage from diabetes could be visible; ankle measurements to ascertain swelling, or ultrasounds if warranted. — Elizabeth Cooney, STAT, 8 June 2026 When a woman is discharged after birth, the burden is on her and her family to ascertain potential complications and seek timely care. — Yenupini Joyce Adams, The Conversation, 27 May 2026 See All Example Sentences for ascertain

Recent Examples of Synonyms for ascertain

Verb

Between 60% and 70% of new Ebola cases are being detected among people who were not already being monitored as contacts, meaning health workers may only discover infections after patients become sick and have had opportunities to expose others.

— ABC News, ABC News, 15 Aug. 2026
The researchers then discovered that the second population of neurons, called Ddah1+ neurons, responded to stress.

— Isabella Backman, Hartford Courant, 14 Aug. 2026

Definition of discover

Verb

Going into November, an Associated Press analysis found that Wasserman Schultz is the only white Democrat positioned to represent any of the remaining districts with a Black majority or plurality.

— ABC News, ABC News, 17 Aug. 2026
About one in three home sales in the Bay Area were all cash from April through June, Redfin found.

— Samantha Delouya, CNN Money, 17 Aug. 2026

Definition of find

Verb

Like Bill Gates and MacKenzie Scott today, Rosenwald realized that people who command great wealth have corresponding responsibilities to help others.

— Harold Pollack, Chicago Tribune, 14 Aug. 2026
In hearing their stories, Knopf came to realize that none had ever really learned how to teach children to read.

— Amy Drew Thompson, The Orlando Sentinel, 13 Aug. 2026

Definition of realize

Verb

The courses, Cristerna said, would have been useful in learning how to negotiate brand deals, maximize monetization opportunities and cultivate and keep an audience.

— ABC News, ABC News, 14 Aug. 2026
But by the next month, Tufts learned Clancy had started taking multiple other medications prescribed by another provider.

— Nicki Brown, CNN Money, 14 Aug. 2026

Definition of learn

Verb

While a thin sliver will remain illuminated by direct sunlight, most of the lunar surface will appear dramatically darkened with a subtle reddish-orange glow — reminiscent of a total lunar eclipse seen across North America on March 3.

— Jamie Carter, Forbes.com, 13 Aug. 2026
As premier, she has rarely been seen in public wearing all-black suits and boots.

— ABC News, ABC News, 13 Aug. 2026

Definition of see

Verb

Arkansas Baptist College, a private, historically Black college located several blocks east of Little Rock's Central High School, is expanding its student housing with the acquisition of a La Quinta Inn in downtown Little Rock.

— Dale Ellis, Arkansas Online, 18 Aug. 2026
Wyoming Whiskey is located in the small town of Kirby—and this is truly a small town, with only about 60 full-time residents based there.

— Jonah Flicker, Robb Report, 18 Aug. 2026

Definition of locate

Verb

Around that time, multiple officers fired stun guns — the electric shocks of which could be heard lasting about four or five seconds.

— Jakob Rodgers, Mercury News, 13 Aug. 2026
In hearing their stories, Knopf came to realize that none had ever really learned how to teach children to read.

— Amy Drew Thompson, The Orlando Sentinel, 13 Aug. 2026

Definition of hear

Verb

Currently, each state has the power to determine its own rules, with many states opting to return a portion of the interest generated back to homeowners.

— P.R. Lockhart, Hartford Courant, 13 Aug. 2026
Mosser has not come to the negotiating table just yet, but Richardson says his office is determined to fix a wrong.

— CBS News, CBS News, 13 Aug. 2026

Definition of determine

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ascents

ascertain

ascertained

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Style

“Ascertain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ascertain. Accessed 20 Aug. 2026.

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Synonyms of ascertain

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