"I'll go and see to it at once, sir," he said with alacrity, and with less frigidity in his manner. "Has her ladyship everything she wants for supper?"
Baroness Emmuska Orczy. The Scarlet Pimpernel
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Miss Bingley moved with some alacrity to the pianoforte;
Jane Austen. Pride and Prejudice (1813)
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if I had then known the nature of princes and ministers, which I have since observed in many other courts, and their methods of treating criminals less obnoxious than myself, I should, with great alacrity and readiness, have submitted to so easy a punishment.
Jonathan Swift. Gulliver's Travels Into Several Remote Regions of the World (1726)
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I was invited to go on one of these fruit-picking expeditions with several of the young women of the castle, and accepted with alacrity,
Diana Gabaldon. Outlander (1991)
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he judged from the alacrity of the old man that the hour of action must be near at hand;
Robert Louis Stevenson. The Suicide Club
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‘He turns you adrift on the world with surprising alacrity.’
Emily Brontë. Wuthering Heights (1847)
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Fortunately she dispatched the stuff with her usual alacrity.