About
The character "密" is structurally composed of the roof radical "宀" over the elements "必" and "山", the latter meaning mountain, which together originally suggested connotations of sheltered or densely packed environments. Its etymology points to early uses describing physical density, such as thick forests or close-knit structures, derived from the imagery of a covered mountainous area. The meaning of "密" later shifted from these concrete applications to include abstract notions of secrecy and privacy, reflecting a conceptual move from spatial closeness to informational concealment.
Etymology Hide
Example Sentences Hide
我知道你的秘密。
密码必须保密。
他们关系很密切。
森林里树木茂密。
这座城市人口稠密。
政府文件是机密的。
我们需要严密监视。
加密技术保护数据安全。