insidious in a sentence

Definition

Insidious: proceeding in a gradual, subtle way but with harmful effects; treacherous or deceitful.

The insidious spread of misinformation made it difficult to discern the truth.
Her insidious charm disguised her true intentions, captivating everyone around her.
The disease was insidious, creeping silently through the population before symptoms appeared.
They devised an insidious plan to undermine their rival's reputation without being detected.
The insidious nature of addiction often blinds individuals to the harm it causes.