utilitarianistn.
Etymology: formed as utilitarianism n. + -ist suffix.Previous versions of the OED give the stress as: utiliˈtarianist.
rare.
the mind > mental capacity > philosophy > pragmatism > [noun] > utilitarianism > adherent of
1882 H. J. Gamble 20 A distinguished utilitarianist of the present day.
This entry has not yet been fully updated (first published 1926; most recently modified version published online June 2021).