[f. the sb. Cf. Fr. actionner.] To institute a legal action against.

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1733.  Fielding, Don Quix., Wks. 1861, 999. I don’t question but to action him out on’t.

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1881.  Echo, 1 July, 2/4. To prove his innocence, he took the only course open to him—actioned his enemy for libel.

3