# ironclad

> English word · Adjective · frequency rank #40,754

## Definitions
1. Covered with iron, steel, or (loosely) any other tough metal; armor-plated.
2. Solid or certain; not able to be disputed or questioned; irrefutable.
3. Rigorous; severe; exacting.
4. Stubborn; inflexible.

## Etymology
From iron + clad.

## Common misspellings (12)
`iornclad`, `irnoclad`, `irocnlad`, `ironcald`, `ironcclad`, `ironcladd`, `ironclda`, `ironcllad`, `ironlcad`, `ironnclad`, `irronclad`, `rionclad`

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