Firmly, often dogmatically held:
Firm in mind or purpose; stubborn; unyielding; unshakable
Not expected to change in status, condition, or place:
Severe; strict; exacting
Not loose or vague; exact or precise:
That cannot be altered; unchangeable
Not changing or subject to change; constant.
Not to be altered; immutable:
Capable of being changed or adjusted to meet particular or varied needs:
Find another word for ironclad. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for ironclad, like: fixed, immutable, inflexible, irrefutable, permanent, rigid, strict, unalterable, warship, inalterable and invariable.