supererogatory

Acts of charity are, by definition, supererogatory — commendably above and beyond what moral duty requires.

But for most of us, who have a body of knowledge to talk about and some stories to tell, slideware is supererogatory.

He’s an ineffective, chronically ruminative man who thinks of himself as a “supererogatory weirdo.”

No conditions seem so propitious for a practical confederation as those of Spanish America; with a few exceptions, the virtual unity of language, laws, general race-ideals, would seem to render protection of frontiers supererogatory.

For one so often finds that acts specially showing delicacy and considerateness, little supererogatory works of kindness, are taken unkindly.