I remember back in secondary school in the early 2000s, this was the literal textbook example of how the media frames things. The teachers’ union was up to some industrial action at the time, which made it all the more relevant.

“The union firmly insisted on their original position” “The union stubbornly insisted on their original position”

Consider also confidence vs arrogance.

“The minister confidently stated the dispute will be over soon” “The minister arrogantly stated the dispute will be over soon”