infiltrate

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infiltrate into (something)

To pervade or pass through a particular place or thing. Blackout curtains, man. That's the only way to keep the morning sun from infiltrating into your room.
See also: infiltrate

infiltrate (something)

To surreptitiously gain access to a particular group or thing, as to monitor or affect their activities. The boss is starting to wonder if an undercover cop has infiltrated our group.
See also: infiltrate

infiltrate into something

 
1. to permeate something; to filter into something. Thesoursmell infiltrated into everything in the refrigerator. The paint smell infiltrated into every room in the house.
2. and infiltrate something to penetrate a group, secretly, for the purposes of spying or influencing the activities of the group. The spy infiltrated into the enemy headquarters. They infiltrated into the government.
See also: infiltrate