n.
Pronunciation: ˌ sü-p ə r- ˌ er- ə - ' g ā -sh ə n
Function: noun
Etymology: Medieval Latin supererogation-, supererogatio, from supererogare to perform beyond the call of duty, from Late Latin, to expend in addition, from Latin super- + erogare to expend public funds after asking the consent of the people, from e- + rogare to ask ― more at RIGHT
Date: 1526
: the act of performing more than is required by duty, obligation, or need