obtuseness
1. 感觉迟钝：obtuse 钝的 | obtuseness 感觉迟钝 | obverse 倒转的
2. 钝/迟钝/愚钝：obtusely /钝地/迟钝地/愚钝地/ | obtuseness /钝/迟钝/愚钝/ | obtusin /纯菇菌素/决明素/
noun
1. the quality of lacking a sharp edge or point
2. the quality of being slow to understand
Synonym: dullness