obtuse , adj :
Intellectually dull or dim-witted. Indirect or circuitous. Of sound, etc.: deadened, muffled, muted. (geometry) Of an angle: greater than 90 degrees but less than 180 degrees. (geometry) Of a triangle: having one obtuse angle. (now chiefly botany, zoology) Not sharp; blunt.
Source http://handbookblogger.blogspot.com/2018/01/obtuse-word-of-day-for-january-15-2018.html
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