Resolute (adjective)

Firmly resolved or determined; unshakable in purpose or will.

Origin:

From the latin resolutus, past participle of resolvere, meaning "to loosen or settle". the word first appeared in english in the early 17th century.

Examples:

1. She was resolute in her decision to start her own business.
2. He was resolute in his pursuit of justice.
3. They were resolute in their efforts to improve the community.
4. The company was resolute in its commitment to sustainability.
5. The soldiers were resolute in their defense of the country.