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ascertain
used in The Hound of the Baskervilles

only 1 use
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Definition
find out, learn, or determine with certainty (usually by making an effort)
  • We had best ascertain if he is really there, or if by any possibility he might be in London.
    Chapter 5 — Three Broken Threads (30% in)

There are no more uses of "ascertain" in The Hound of the Baskervilles.

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