Blunt; not acute or pointed: applied to an angle, it denotes one that is larger than a right angle, or of more than 90°. See cuts under angle.
In botany, blunt, or rounded at the extremity: as, an obtuse leaf, sepal, or petal.
Dull; lacking in acuteness of sensibility: stupid: as, he is very obtuse; his perceptions are obtuse.
Not shrill; obscure; dull: as, an obtuse sound.