Synonyms & Antonyms of ascertain

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

Synonyms for ascertain

Words Related to ascertain

Phrases Synonymous with ascertain

Near Antonyms for ascertain

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

Synonyms for ascertain

Words Related to ascertain

Near Antonyms for ascertain

Antonyms for ascertain

See the Dictionary Definition 

Frequently Asked Questions About ascertain

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

Learn More About ascertain

Time Traveler for ascertain

Time Traveler

The first known use of ascertain was in the 15th century

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Thesaurus Entries Near ascertain




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Cite this Entry

“Ascertain.” Thesaurus, Merriam-Webster, Accessed 29 May. 2022.

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More from Merriam-Webster on ascertain

Nglish: Translation of ascertain for Spanish Speakers

Britannica English: Translation of ascertain for Arabic Speakers


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