Obs. rare. [app. f. THRO, THRA sb. (or ? a.) + -LY1.] Vehement, persistent, painful.

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c. 1350.  Will. Palerne, 612. Al comes of a þroly þouȝt þat þirles min hert. Ibid., 910. Ibid., 3518. Þe þroli þouȝt þat him meued … sone he let ouer-slide.

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