I . a.
1.
Dull, obtuse, pointless, edgeless.
2.
Dull-witted, dull, thick-witted, obtuse, stupid, stolid.
3.
Abrupt, bluff, plain, uncourtly, unceremonious, without formal civility.
4.
Brusk ( or brusque ), rough, harsh, uncourteous, ungracious, impolite, rude.
II . v. a.
1.
Dull, make dull.
2.
Benumb, paralyze, deaden, stupefy, obtund, hebetate, make insensible, callous, or obtuse.
3.
Moderate, allay, assuage, mitigate, quiet, alleviate, soften.