About
钝, the simplified form of 鈍, is a phonosemantic compound. The left component 钅 (derived from 金 in the traditional character) means 'metal' and points to the original context of metallic blades or tools. The right component 屯 supplies the pronunciation. It initially denoted the physical dullness or bluntness of a metal weapon or cutting implement, the condition of having lost a sharp edge. Through metaphorical extension, this meaning grew to include mental dullness, describing a person who is slow-witted, sluggish, or unresponsive. Thus, 钝 bridges the physical and psychological realms, applying both to objects and to human traits.
Etymology Hide
Example Sentences Hide
这把刀很钝。
他的反应有点迟钝。
用钝器敲击并不安全。
钝角大于九十度。
长期的孤独会让人感觉钝化。
他对批评有一种有益的钝感力。
疼痛感由尖锐转为迟钝。
金属表面经过处理会发生钝化反应。
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