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.
The insidious nature of the EU is such that the majority of British citizens do not even recognize the threat.
Drinking a cup of coffee each morning can lead to an insidious addiction.
The insidious group of villians was successful with their mission.
Ghosts and other haunted characters in movies are very insidious.
The insidious habit of spending too much time on social media quickly begins to have negative effects on the mind.
Some teenage girls can be insidious and sneaky with their gossip.
It was so insidious in people's minds, and so full of surprises.
It was an insidious plot to get you involved with the electric mania in which you wire up hundreds of lightbulbs.
It was insidious in onset, caused by infection, infarction or insufficient insulin.