Thesaurus.com
Dictionary.com
Definitions

infiltrator

[in-fil-trey-ter, in-fil-trey-] / ˈɪn fɪlˌtreɪ tər, ɪnˈfɪl treɪ- /
NOUN
intruder
Synonyms
STRONGEST
STRONG


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

They had to go with the “selfie cruise” narrative, which meant they had to treat them with basic decency because they couldn’t pass them off as some evil infiltrator.

From Slate Sep. 29, 2025

When Patriot Front members filed a lawsuit against the infiltrator accusing him of “malicious doxxing,” they relied on federal law and invasion of privacy and computer fraud statutes.

From Seattle Times Nov. 16, 2023

Ukrainian agencies, Ton-That said, have used the app to confirm the identities of people at military checkpoints and to check whether a Ukrainian is a possible Russian infiltrator or saboteur.

From Washington Post Apr. 15, 2022

They say the guard may have been a second infiltrator trying to stoke anger and deflect blame.

From New York Times Nov. 2, 2018

He considered that perhaps they were just checking him out, making sure he wasn’t an FBI infiltrator, but as the weeks went by, C.P. ached with disappointment.

From "The Best of Enemies" by Osha Gray Davidson




Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training