To call to mind; to recall or bring to recollection, reflection, or consideration; to think; to consider; -- generally followed by a reflexive pronoun, often with of or that before the subject of thought. To recollect; remember; reflect.
“Enough, men! Enough! Cease . . . bethink yourselves! What are you doing?”
Leo Tolstoy. War and Peace: 10 (Book Ten)
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But, bethinking himself that this would not help matters, he stopped short in the middle of a sentence, and merely sighed.
Leo Tolstoy. Anna Karenina
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Here will be officers presently, bethink you
Of some course suddenly to 'scape the dock:
For thither you will come else.
Ben Jonson. The Alchemist (1610)
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I bethought myself to ring the bell.
Charlotte Brontë. Jane Eyre (1847)
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Hereupon I bethought me of looking immediately before my nose, and there, sure enough, confronting me at the table sat a personage nondescript, although not altogether indescribable.
Edgar Allan Poe. The Works of Edgar Allan Poe — Volume 4: The Angel of the Odd (1844)