[f. prec. + -ER1: cf. Fr. comploteur (16th c.).] One who joins in a plot; a fellow-plotter, conspirator.

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1592.  Warner, Alb. Eng., VII. xxxv. (1612), 168. He By his Complottors was pretens’te Duke Clarence sonne to be.

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1630.  Wadsworth, Sp. Pilgr., iii. 26. Father Gerat, a complotter of the Gunpowder Treason.

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a. 1718.  Rowe, Jane Shore, IV. i. 44. Thou art … The Patron and Complotter of her Mischiefs.

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1890.  Harper’s Mag., June, 48/1. There is … recognized dishonor among small complotters.

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