infiltration

/ɪnfɪlˈtɹeɪʃən/

//ɪnfɪlˈtɹeɪʃən// noun

By · According to Wiktionary data (CC BY-SA) ·

"infiltration" is a 12-letter English headword indexed on PlainSpell.

The verdict

“infiltration” has 19 generated spelling variants in the English index at frequency #21,245. The variants make it a useful spelling check.

#21,245
frequency rank, English
17,902
“I” headwords
19
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.

Key facts for infiltration
PropertyValue
Headwordinfiltration
LanguageEnglish
Part of speechNoun
IPA/ɪnfɪlˈtɹeɪʃən/
Letters12
Frequency rank#21,245
Misspellings tracked19
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “infiltration” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). infiltration lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 19 spelling variants around infiltration (IPA /ɪnfɪlˈtɹeɪʃən/), anoun. Corpus frequency is #21,245 among 17,902 “I” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 19 likely wrong-spelling variants for infiltration, with forms such as "ifniltration", "inffiltration", and "infilltration". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. Our confusable-pair dataset has no match for it, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion. The correct English form is infiltration, spelled I-N-F-I-L-T-R-A-T-I-O-N.

Definition

  1. 1
    The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
  2. 2
    The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
  3. 3
    The substance which has entered the pores or cavities of a body.
  4. 4
    The act of secretly entering a physical location and/or organization.

Etymology

From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion.

This word in other languages

filtración(Español)infiltration(Français)Infiltration(Deutsch)

Common misspellings

Also misspelled as:

  • ifniltration
  • inffiltration
  • infilltration
  • infilrtation
  • infiltartion
  • infiltraiton
  • infiltrasion
  • infiltratino
  • infiltrationn
  • infiltratoin
  • infiltrattion
  • infiltrration
  • infiltrtaion
  • infilttration
  • infitlration
  • inflitration
  • inifltration
  • innfiltration
  • nifiltration

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of infiltration - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

ifniltration2inffiltration1infilltration1infilrtation2infiltartion2infiltraiton2infiltrasion1infiltratino2
Edit distance from "infiltration"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "infiltration"?
"infiltration" is spelled I-N-F-I-L-T-R-A-T-I-O-N. The IPA pronunciation is /ɪnfɪlˈtɹeɪʃən/.
What does "infiltration" mean?
As a noun, "infiltration" means: The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
What are common misspellings of "infiltration"?
Common misspellings include "ifniltration", "inffiltration", "infilltration", "infilrtation", "infiltartion". The correct spelling is "infiltration".
How do you pronounce "infiltration"?
The IPA (International Phonetic Alphabet) transcription for "infiltration" is /ɪnfɪlˈtɹeɪʃən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "infiltration"?
From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “infiltration”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is I-N-F-I-L-T-R-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /ɪnfɪlˈtɹeɪʃən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list