A person who will not compromise is an example of an adamant person.
An unchanging belief that God exists is an example of an adamant belief.
Other Word Forms
Origin of adamant
- From Middle English a hard precious stone from Old French adamaunt from Latin adamās adamant- from Greek unconquerable, hard steel, diamond demə- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin adamantem, accusative singular form of adamās (“hard as steel”), from Ancient Greek ἀδάμας (adamas, “invincible”), from ἀ- (a-, “not”) + δαμάζω (damazo, “I tame”).