We will say that the members of a collectivity enjoy maximum
ophelimity in a certain position when it is impossible to fond a way of
moving from that position very slightly in such a manner that the
ophelimity enjoyed by each of the individuals of that collectivity increases
or decreases. That is to say, any small displacement in departing from
that position necessarily has the effect of increasing the ophelimity
which certain individuals enjoy, and decreasing that which others
enjoy, of being agreeable to some and disagreeable to others.

Заранее спасибо

спец., экон. полезность, удовлетворительность; способность удовлетворить потребность, желание

на англ:
ophelimity
From Wiktionary
English
Noun
ophelimity
1. Economic satisfaction.