obtusi- +

1. Having a cutting edge or point that is not sharp; dull: "He was hit on the head with a blunt instrument."
2. Very frank or straightforward and showing no delicacy or consideration when commenting.
3. Saying or expressing something in a very direct way that may upset other people: "To be perfectly blunt, I find her annoying."
"He was blunt about needing more privacy."
4. To make something less sharp: "They tried to blunt their criticism by praising her energy and enthusiasm; this way, their blunts were not so upsetting."

The quality of being overly direct and outspoken: "She replied with characteristic bluntness."

1. Slow to understand or to perceive something; lacking fast perception or intellect.
2. In mathematics, an angle greater than 90 degrees and less than 180 degrees.
3. A triangle with one internal angle greater than 90 degrees.
4. Blunt, not sharp or pointed.
5. A description of leafs that have rounded or blunt tips.
6. Etymology: from Middle French obtus, obtuse, from Latin obtusus, "blunted, dull"; from obtundere, "to beat against, to make dull"; from ob, "against" + tundere, "to beat".

1. A reference to a lack of a sharp edge or point.
2. The quality of being slow to understand.
3. Characterized by a lack of intelligence or sensitivity; such as, an obtuse remark.
4. Not distinctly felt; for example, an obtuse pain.

Short- and blunt-tongued.

1. The act or process of making obtuse or blunt.
2. The state of being dulled or blunted; such as, the obtusion of the senses and perceptions.
3. A state of diminished sensibility or consciousness.