"Ah, but the sword’s the thing when you come to close fighting," said Mr. Poulter, involuntarily falling in with Tom’s enthusiasm, and drawing the sword so suddenly that Tom leaped back with much agility.
The sight of the long-hated predominant man down, and in his power, threw him into a frenzy of triumphant vengeance, which seemed to give him preternatural agility and strength.
There are no more uses of "agile" in the book.
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She is amazingly agile for someone so tall.
Her agility allows her to guard even the quickest ball handlers.