Synonyms of ironclad

Noun

1. ironclad, warship, war vessel, combat ship

usage: a wooden warship of the 19th century that is plated with iron or steel armor

Adjective

1. ironclad, sheathed (vs. unsheathed)

usage: sheathed in iron plates for protection

2. ironclad, brassbound, inflexible (vs. flexible)

usage: inflexibly entrenched and unchangeable; "brassbound traditions"; "brassbound party loyalists"; "an ironclad rule"

Definition and meaning of ironclad (Dictionary)