To bestir oneself, to be active. Rare.

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1843.  “As for Harvest, let him shirk for himself,” said a fourth, “he’s a poor, barebacked animal, and is of no more value than an old rain-spout,” accompanying his words with a copious commentary of an aquatic nature.—Cornelius Mathews, ‘Writings,’ p. 71.

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1850.  He sends him off next morning to shirk for himself.—The same, ‘Moneypenny,’ p. 157.

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