He experienced the insidious influence of the corporate culture.
The spam is becoming more insidious.
He made insidious threats to gulf stability.
There was an insidious onset of the disease.
Much opposition was offered to the scheme, which was denounced as an insidious attempt to enslave the people by arbitrary and tyrannical methods.
Drinking a cup of coffee each morning can lead to an insidious addiction.
The insidious nature of the EU is such that the majority of British citizens do not even recognize the threat.
The insidious group of villians was successful with their mission.
Ghosts and other haunted characters in movies are very insidious.
Don't let a habit become insidious and turn into an addiction.
Some teenage girls can be insidious and sneaky with their gossip.