# infiltrate

> English word · Verb · IPA /ˈɪnfɪltɹeɪt/ · frequency rank #20,964

## Definitions
1. To surreptitiously penetrate, enter or gain access to.
2. To cause to penetrate in this way.
3. To pass through something by filtration.
4. To cause (a liquid) to pass through something by filtration.
5. To invade or penetrate a tissue or organ.
6. To send (soldiers, spies, etc.) through gaps in the enemy line.
7. To move from a vein, remaining in the body.

## Etymology
From Middle English infiltrate (adjective), from Medieval Latin infiltrātus, from infiltrō.

## Common misspellings (15)
`ifniltrate`, `inffiltrate`, `infilltrate`, `infilrtate`, `infiltarte`, `infiltraet`, `infiltratte`, `infiltrrate`, `infiltrtae`, `infilttrate`, `infitlrate`, `inflitrate`, `inifltrate`, `innfiltrate`, `nifiltrate`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/infiltrate