• (British) IPA: /ˌæsəˈteɪn/
  • (America) enPR: ăs'-ər-tānʹ, IPA: /ˌæsɚˈteɪn/

ascertain (ascertains, present participle ascertaining; past and past participle ascertained)

  1. To find out definitely; to discover or establish.
    Synonyms: determine, discover, establish, find out, learn, work out
    As soon as we ascertain what the situation is, we can plan how to proceed.
  2. (obsolete) To make (someone) certain or confident about something; to inform.
  3. (archaic) To establish, to prove.
  4. (archaic) To ensure or effect.

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