ascertain (B2)

verb

Pronunciation: /ˌæsərˈteɪn/

Definition

To find out something for certain; to make sure.

Examples

• We need to ascertain the facts before making a decision.

• Can you ascertain whether the package has arrived?

• The study aims to ascertain the effects of the new policy.

How to Use ascertain

ascertain that (collocation)

To find out if a particular situation or fact is true. — "He tried to ascertain that the documents were authentic."

ascertain whether (collocation)

To find out if one of two or more possibilities is true. — "We need to ascertain whether the flight has been delayed."

ascertain the [noun] (collocation)

To find out specific information about something. — "The goal is to ascertain the true extent of the damage."

Synonyms of ascertain

Words with a similar meaning to ascertain:

• find out
• learn
• determine
• verify
• confirm

Antonyms of ascertain

Words with the opposite meaning to ascertain:

• guess
• doubt

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