Unshaken
Part of speech: adjective
Definition: Not shaken
Resolute
Part of speech: adjective
Definition: Firm, unyielding, determined. For example, she was 'resolute' in her determination to resist his romantic advances.
Example sentence: Well Australia's been in Afghanistan from the get go, way back in 2001, but we have been resolute throughout and with support from both sides of Australian politics.