Origin: 1730–40; < LL superērogātus (ptp. of superērogāre to pay out in addition), equiv. to super-super-+ ērogātus ptp. of ērogāre to pay out, equiv. to ē-e-+ rog(ere) to ask + -ātus-ate1
su·per·er·o·gate (sōō'pər-ěr'ə-gāt') intr.v.
su·per·er·o·gat·ed, su·per·er·o·gat·ing, su·per·er·o·gates To do more than is required, ordered, or expected.
[Late Latin superērogāre, superērogāt-, to spend over and above : Latin super-, super- + Latin ērogāre, to spend (ē-, ex-, ex- + rogāre, to ask; see reg- in Indo-European roots).] su'per·er'o·ga'tion (-gā'shən) n.