adamantine
/ˌædəˈmæntin/
adjective
- Extremely hard and impossible to break, cut, or scratch.
- The scientist searched for an adamantine material to build the spacecraft's hull.
- Her adamantine will helped her overcome every obstacle in her path.
- The ancient sword was made of an adamantine metal that never dulled.
- Firm and unyielding in purpose or opinion; stubbornly determined.
- She was adamantine about following the rules, even when no one was watching.
- His adamantine refusal to compromise ended the negotiations.
- Despite the protests, the mayor remained adamantine in her decision to close the park.
Synonyms