insidiousness

• 阴险狡诈、暗中危害或背信弃义的特性；也指疾病或危险在不知不觉中逐渐积累并造成破坏的性质。

A noun referring to the quality of being subtly harmful, treacherous, or having a gradual, cumulative damaging effect, often used in contexts such as disease or deception.

不可数

1. Subtle and cumulative harmfulnessC2formalmedical

   The quality of being harmful in a gradual, subtle, and often unnoticed way, especially regarding a disease or condition.

   隐匿危害性

   • The insidiousness of the virus made it difficult to detect until it was too late.
   • Doctors warned about the insidiousness of high blood pressure, which often shows no early symptoms.
   • The insidiousness of the disease lies in its ability to damage organs silently over many years.

   同义词perniciousness

2. Quality of being designed to entrapC2formal

   The quality of being cunning, treacherous, or intended to deceive and trap someone.

   阴险

   • The insidiousness of the scam was revealed only after many victims had lost their savings.
   • He was unaware of the insidiousness of the plan, which was designed to ruin his reputation.
   • The insidiousness of the propaganda lay in its subtle manipulation of public opinion.

   同义词artfulnesscraftinesscunningdeceitfulnessdeviousnessduplicityguileslynesstreacherywiliness