Insidious is to progress in a gradual, subtule way, but with harmful effects. Like STDs.
Insidious is an adjective.
Insidious
Insidious is spelled as "I-N-S-I-D-I-O-U-S".
Plagiarism is an insidious habit.
The investigators uncovered an insidious scheme to rob people of their life savings. Another one is "There is a more insidious threats to Gulf stability."
Morrie's disease "ALS" is insidious .
Insidious was released on 04/01/2011.
The Production Budget for Insidious was $1,500,000.
Insidious is itself an adjective. Virus is a noun. Insidious may be used as an adjective to describe a sneaky virus.
The duration of Insidious - film - is 1.7 hours.
The Insidious Lie was created on 2011-01-24.
Insidious grossed $99,870,886 worldwide.