undespondentadj.
Etymology: Previous versions of the OED give the stress as: undeˈspondent.
the mind > mental capacity > expectation > hope > [adjective] > not despairing
1876 J. R. Lowell 2nd Ser. 119 Such a life as his through all those sorrowing but undespondent years.
This entry has not yet been fully updated (first published 1921; most recently modified version published online June 2019).