Definition of Insidious

something that is slowly and secretly causing harm

Examples of Insidious in a sentence

The insidious playboy planned to con the heiress out of her fortune. 🔊

While Helen may seem like a nice woman, I believe she has an insidious side to her. 🔊

The car dealership used attractive insidious models to lure in buyers. 🔊

Although the medicine made Gabriel feel better at first, its effect was insidious and only lasted a short time. 🔊

Carol created an insidious plot to steal her best friend’s husband. 🔊

Even though he seemed honest and trustworthy, the cult leader was an insidious man who only wanted to trick his followers into giving him their assets. 🔊

Alcohol is an insidious beverage that convinces people to do silly things. 🔊

Because I was so trusting, I did not realize the insidious man was using me to get information about the bank where I worked. 🔊

The insidious witch put out cookies and candy to entrap naïve children. 🔊

After the police conducted their investigation, they realized the suspect had created an insidious scheme by which he tricked elderly people out of their medications. 🔊

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