LEARNit Dictionary
infiltrator
noun
/ˈɪnfɪltreɪtə(r)/
UK
/ˈɪnfɪltreɪtər/
US
1
a person who secretly becomes a member of a group or goes to a place, to get information or to influence the group
نفوذگر, رخنهگر, جاسوس مخفی