ascertain

What does “ascertain” mean?

verb.to find something out for certain; to make sure of.

SAT Usage

The term is commonly found in passages related to scientific inquiry or investigative contexts, often emphasizing the importance of confirming facts or data. It implies a deliberate effort to uncover truth or clarity, setting it apart from similar words like "discover," which may not convey the same level of certainty or thoroughness.

Common Confusions

Ascertain implies a thorough effort to confirm facts or details, while discover usually suggests simply finding something by chance or uncovering it without the same level of verification.

Example Sentences

• Detectives worked to ascertain the exact cause of the accident.

• The detective worked tirelessly to ascertain the truth behind the alibi, piecing together seemingly unrelated evidence to reveal the suspect's deception.

Word Parts: How to Remember “ascertain”

Break “ascertain” into its parts: ad- (to, toward). Knowing roots like these helps you decode unfamiliar SAT vocabulary.

• Prefix: ad- to, toward (Latin)