late 15c., "stupidity," also "dullness of an edge, state or quality of being blunt," from blunt (adj.) + -ness. Meaning "rudeness" is from c. 1600.
the bluntness of a Yorkshireman
blunderbuss
blunderful
blundering
blunt
bluntly
bluntness
blur
blurb
blurry
blurt
blush
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