Definition

A person who secretly enters a place or organization to gather information or influence events, often without being noticed.

Example

The infiltrator managed to gather valuable intelligence without being detected.

Conversation

Did you hear about the new infiltrator in the group?

Yeah, I heard they're trying to gather information without anyone noticing.

It's kind of scary to think about someone pretending to be one of us.

Definitely! I hope they figure it out before anything serious happens.

Synonyms & Antonyms

Root Explanation

Infiltrator → It is formed from "in-" (meaning into) and "filtrare" (meaning to filter). The word describes someone who enters into a place or group, often secretly, to gather information or influence.

Memory Tip

Think of someone who enters 'into' ('in-') a place to 'filter' information — that's why an infiltrator is someone who secretly enters to gather intel.

Visually Confused Words