bonistn.
/ˈbɒnɪst/, /ˈbəʊnɪst/, U.S. /ˈbɑnəst/, /ˈboʊnəst/ rare.
A person who holds the doctrine that this world, although not the best of all possible worlds, is a good one; an adherent or advocate of bonism (bonism n.). Cf. malist n.
ΘΚΠ
the mind > goodness and badness > quality of being good > [noun] > doctrine that world is good > one who holds
bonist1882
1882 J. W. Barlow Ultimatum of Pessimism 5 So we see that Optimist and Pessimist are no longer suitable names..; and the positive forms Bonist and Malist would certainly be more appropriate.
1932 Times Lit. Suppl. 14 July 508/4 Between optimists and pessimists there are those who style themselves..bonists, malists and pejorists.
This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021).
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n.1882