It's insidious. You can't see it.

I find these crimes to be very insidious.

It's a dehumanizing and insidious concept.

Trust me, Wilbur. People are very gullible. They'll believe anything they see in print.

Erosion is a slow and insidious process. Yet, controlling soil erosion is really quite simple: The soil can be protected with cover crops when the land is not being used to grow crops.

This is a start of a new year for me and I feel fresh, which is the most important thing for me, and that is showing in the scores. I did everything quite well today and didn't make many mistakes. Just one major mistake and bogeyed that hole. But overall drove it well and hit my irons well.