impermeability
/ɪmˌpɝmi.əˈbɪlɪti/
"impermeability" is a 14-letter English headword indexed on PlainSpell.
The verdict
“impermeability” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 14
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - the quality of being impermeable
| Property | Value |
|---|---|
| Headword | impermeability |
| Language | English |
| Part of speech | Noun |
| IPA | /ɪmˌpɝmi.əˈbɪlɪti/ |
| Letters | 14 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “impermeability” sits in English frequency
Rare enough to double-check
impermeability is uncommon English outside the top frequency list, classed as anoun, transcribed /ɪmˌpɝmi.əˈbɪlɪti/. Rarity is why readers land here mid-draft. Gloss: "the quality of being impermeable".
No generated misspelling entries exist for impermeability in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. We don't track a confusable pairing for this entry, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: Borrowed from French imperméabilité. The correct English form is impermeability, spelled I-M-P-E-R-M-E-A-B-I-L-I-T-Y.
Definition
- 1the quality of being impermeable
Etymology
Borrowed from French imperméabilité.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “impermeability”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-M-P-E-R-M-E-A-B-I-L-I-T-Y - every other letter order is a misspelling in standard orthography.
- Say it as /ɪmˌpɝmi.əˈbɪlɪti/ (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
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.