noun
- the quality of being harmful in a way that is gradual or not easily noticed
Examples
- The insidiousness of the disease made early detection difficult.
- She was shocked by the insidiousness of his betrayal.
- The insidiousness of online misinformation poses a serious threat to democracy.
- The novel explores the insidiousness of prejudice in small-town life.
- Experts warn about the insidiousness of certain financial scams.
- The insidiousness of the corruption became apparent only after years of investigation.