V2 Vocabulary Building Dictionary
Definition: to determine or discover something with certainty--to make sure
Synonyms: determine, discover, confirm, learn, substantiate, conclude, unearth
Antonyms: assume, guess, conjecture, surmise
Tips: Notice the word "certain" within the word ascertain. The words are closely related, and ascertain essentially means "to make certain." Ascertain is a more sophisticated way of saying "confirm" or "determine." If something is described as ascertainable, it means that it can be determined or confirmed with certainty.
How do you plan to ascertain the accuracy of this report? (determine, confirm)
Before you begin investing in the stock market, it is important that you ascertain the amount of risk you are willing to incur. (discover, determine)
The investigators have not been able to ascertain the cause of the accident. (determine, discover, confirm)
We should ascertain that we have the right directions before heading out. (confirm, substantiate)
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