in·fil·trate: verb \in-ˈfil-ˌtrāt, ˈin-(ˌ)\
: to secretly enter or join (something, such as a group or an organization) in order to get information or do harm
: to cause (someone) to secretly enter or join a group, organization, etc.
Full Definition of INFILTRATE
1: to cause (as a liquid) to permeate something by penetrating its pores or interstices
2: to pass into or through (a substance) by filtering or permeating
3: to pass (troops) singly or in small groups through gaps in the enemy line
4: to enter or become established in gradually or unobtrusively usually for subversive purposes <the intelligence staff had been infiltrated by spies>
intransitive verb: to enter, permeate, or pass through a substance or area by filtering or by insinuating gradually
— infiltrate noun
— in·fil·tra·tion noun
— in·fil·tra·tive adjective
— in·fil·tra·tor noun
Examples of INFILTRATE
- The gang was infiltrated by undercover agents.
- Attempts to infiltrate undercover agents into the gang have failed.
- Water can easily infiltrate the soil.
First Known Use of INFILTRATE