ascertains

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. verb establish after a calculation, investigation, experiment, survey, or study
  2. verb be careful or certain to do something; make certain of something
  3. verb find out, learn, or determine with certainty, usually by making an inquiry or other effort

Synonyms

determine, find, find out, ascertain

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