0 a person who secretly becomes part of a group in order to get information or to influence the way the group thinks or behaves:
The infiltrator was identified and killed.
Its only claim to fame is that it is faulty, unreliable, and has no effect on the trained infiltrator.
The infiltrators seek small but powerful positions as shop stewards within our various unions and organisations.
It used its standard technique of infiltration and betrayal of the trust that the infiltrator had acquired.
He said that those who come for treatment include infiltrators, and they are all kindly treated and receive excellent attention.
None knows better than the professional revolutionary and the infiltrator how best to exploit this weakness.
Some infiltrators have quite innocent purposes, but others are taking part in armed robberies, and most of them have a background of bitterness and destitution.
Infiltrators have been trained and openly encouraged to carry on this kind of work.
But unless we make the protest we shall have no hope of ever impeding the activities of these infiltrators into our country.
