infiltrate Pronunciation: /ˈɪnfɪltreɪt/Translate infiltrate | into French | into Italian | into Spanish German translation of infiltratev.t. 1 infiltrieren; unterwandern [Partei, Organisation] 2 einschleusen [Agenten]infiltrate in other Oxford dictionaries Definition of infiltrate in the British & World English dictionary Definition of infiltrate in the US English dictionary