verb (used without object), su·per·er·o·gat·ed, su·per·er·o·gat·ing.
Origin of supererogate
Examples from the Web for supererogation
But the excess must be in the line of duty; merely needless and irrelevant action is not supererogation.Write It Right|Ambrose Bierce
Some readers will consider such an inquiry to be a work of supererogation.On the Genesis of Species|St. George Mivart
Would to God that our labor of love could be regarded as a work of supererogation!The Anti-Slavery Examiner, Omnibus|American Anti-Slavery Society
But it would be work, of supererogation to multiply instances of similar calamity.
A new work on the subject of Mary Queen of Scots runs an eminent risk of being considered a work of supererogation.Life of Mary Queen of Scots, Volume I (of 2)|Henry Glassford Bell
Word Origin for supererogate
1520s, "the doing of more than duty requires," in Catholic theology, from Late Latin supererogationem (nominative supererogatio) "a payment in addition," from past participle stem of supererogare "pay or do additionally," from Latin super "above, over" (see super-) + erogare "pay out," from ex- "out" + rogare "ask, request" (see rogation).