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English definition of “infiltrate”

infiltrate

verb [I + adv/prep, T]     /ˈɪn.fɪl.treɪt/
to secretly become part of a group in order to get information or to influence the way that group thinks or behaves : A journalist managed to infiltrate the powerful drug cartel .Affecting and influencing to move slowly into a substance , place , system , or organization : At about this time the new ideas about ' corporate management ' had begun to infiltrate (into) local government .Slow and moving slowlyArriving, entering and invading infiltration     /ˌɪn.fɪlˈtreɪ.ʃən/ noun [U] Slow and moving slowlyArriving, entering and invading
(Definition of infiltrate verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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