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 -ate 1 
Related forms: su⋅per⋅er⋅o⋅ga⋅tion, noun
su⋅per⋅er⋅o⋅ga⋅tor, noun