■ adjective
1》 annoyingly insensitive or slow to understand.
2》 (of an angle) more than 90° and less than 180°.
3》 not sharp-pointed or sharp-edged; blunt.
Derivatives
~ly adverb
~ness noun
obtusity noun
Origin
ME: from L. obtusus , obtundere , from ob- 'against' + tundere 'to beat'.