Insidious

How to pronounce insidious

US: /ɪnˈsɪd.i.əs/

UK: /ɪnˈsɪd.i.əs/

Examples

The insidious nature of the disease made it difficult to detect in its early stages.

They were unaware of the insidious influence of the propaganda on their beliefs.

The insidious effects of stress can lead to serious health problems over time.