Against his own rules he had succumbed to that most insidious drug, the news.

The most insidious lie is the one you want to hear.

Given enough time, we're the most insidious threat to all the other races ever born.

"You are speaking to the most insidious villain in this part of the world!"

Sugar is one of the most insidious ingredients in the modern diet.

This was the most insidious plan she had ever heard of.

I think is the most insidious trick of them all, you know.

Passive smoking is probably the most insidious effect of tobacco.

It is one of our oldest and most insidious customs.

His reach is one of the most insidious and toxic forces in global politics today.