# infirm

> English word · Adjective · IPA /ɪnˈfɜːm/ · frequency rank #46,546

## Definitions
1. Weak or ill, not in good health.
2. Irresolute; weak of mind or will.
3. Frail; unstable; insecure.

## Etymology
* The noun is from Middle English infirme, from Latin infirmus (“weak, feeble”).
* The verb is from Latin īnfirmāre.

## Easily confused with
- **infra** (https://plainspell.com/en/vs/infirm-vs-infra)
- **inform** (https://plainspell.com/en/vs/infirm-vs-inform)
- **infer** (https://plainspell.com/en/vs/infer-vs-infirm)
- **Indira** (https://plainspell.com/en/vs/indira-vs-infirm)
- **infill** (https://plainspell.com/en/vs/infill-vs-infirm)

## Common misspellings (9)
`ifnirm`, `inffirm`, `infimr`, `infirmm`, `infirrm`, `infrim`, `inifrm`, `innfirm`, `nifirm`

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