bluntern.
One who blunts or dulls.
ΘΚΠ
the mind > mental capacity > lack of understanding > stupidity, dullness of intellect > [noun] > one who dulls
blunter1609
1609 W. M. Man in Moone sig. Cv He is his owne..beauties blemisher, his wittes blunter.
This entry has not yet been fully updated (first published 1887; most recently modified version published online June 2019).
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n.1609