Origin of supererogatory
Related formssu·per·e·rog·a·to·ri·ly, adverb
Examples from the Web for supererogatory
It is supererogatory to dispute either of these imperial pronouncements.Raemaekers' Cartoons|Louis Raemaekers
With the boys this would have been supererogatory, as they were quite naked.Frank Mildmay|Captain Frederick Marryat
But the supererogatory lie is the gentleman without a voucher or a ticket who accommodates himself with a stool in the passage.
As mine was the only hymn-book in the assembly, the mention of the number was a bit of supererogatory business.When Grandmamma Was New|Marion Harland
What supererogatory marks of special hospitality did the host show his guest?Ulysses|James Joyce