2 uses
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Definition
find out, learn, or determine with certainty (usually by making an effort)
- As I had ascertained back in Africa: the heir meant more to John than anything in this life.4 — 1909 (27% in)
- When we ascertained that all human voice was gone from the place, we sneaked ahead and rushed across a small clearing of mowed grass, making for the Carriage House's west entrance-its only entrance entirely screened from the rest of the house.4 — 1909 (72% in)
There are no more uses of "ascertain" in Rose Red.
Typical Usage
(best examples)