Something ironclad is either covered in iron for protection or protected in a different way. An ironclad guarantee can't be broken or taken back. Originally, this word was very literal: an ironclad battleship was clad (covered) in iron.

What does it mean if something is ironclad?

1 : sheathed in iron armor —used especially of naval vessels. 2 : so firm or secure as to be unbreakable: such as. a : binding an ironclad oath. b : having no obvious weakness an ironclad case against the defendant.

What is another word for ironclad?

In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for ironclad, like: immutable, strict, fixed, inflexible, irrefutable, permanent, rigid, warship, inalterable, invariable and unalterable.