# impervious

> English word · Adjective · IPA /ɪmˈpɜːvi.əs/ · frequency rank #33,680

## Definitions
1. Unaffected or unable to be affected by something.
2. Preventive of any penetration; impenetrable, impermeable, particularly of water.
3. Immune to damage or effect.

## Etymology
From Latin impervius (“that cannot be passed through”), from in- (“not”) + pervius (“letting things through”).

## Easily confused with
- **imperious** (https://plainspell.com/en/vs/imperious-vs-impervious)

## Common misspellings (14)
`imeprvious`, `immpervious`, `imperivous`, `imperrvious`, `imperviosu`, `imperviouss`, `imperviuos`, `impervoius`, `impervvious`, `impevrious`, `imppervious`, `imprevious`, `ipmervious`, `mipervious`

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