a. rare. [ad. late L. superērogans, -ant-, pr. pple. of superērogāre to SUPEREROGATE.] = SUPEREROGATORY. Hence Supererogantly adv., more than is required.

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1737.  Stackhouse, Hist. Bible, VI. ii. (1749), II. 840/2. Then was this Commission … far from being needless, or supererogant.

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1892.  Temple Bar, May, 51. They endeavoured to graft on to the natural goodness of man supererogant virtues.

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1897.  W. Watson, Poems, To S. W. in the Forest, 4.

        Is our London, think you, so
Super-erogantly fair
That yourself it well can spare?

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