Blunt

Blunt
1. Having a thick edge or point, as an instrument; dull; not sharp. The murderous knife was dull and blunt. (Shak)
2. Dull in understanding; slow of discernment; stupid; opposed to acute. His wits are not so blunt. (Shak)
3. Abrupt in address; plain; unceremonious; wanting the forms of civility; rough in manners or speech. Hiding his bitter jests in blunt behavior. A plain, blunt man.
4. Hard to impress or penetrate. I find my heart hardened and blunt to new impressions. (Pope)
blunt is much used in composition, as blunt-edged, blunt-sighted, blunt-spoken.
Synonym: obtuse, dull, pointless, curt, short, coarse, rude, brusque, impolite, uncivil.
Origin: cf. Prov. G. Bludde a dull or blunt knife, dan. Blunde to sleep, Sw. & Icel. Blunda; or perh. Akin to E. Blind.