Obs. rare. [ad. L. superērogātus, pa. pple. of superērogāre: see next.] Supererogatory, superfluous.

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1790.  By-stander, 44. This … is surely a superarogate [sic] ambition. Ibid., 335. [The WORLD] in a mighty supererogate way, extols Mr. SHERIDAN.

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