unfaltering

But he was also charismatic and paid them back with his air of unfaltering confidence.

“They are still fighting, unfaltering in their determination to defend their country.”

"For two years, Ukraine has fought with great courage to repel a brutal Russian invasion. They are still fighting, unfaltering in their determination to defend their country and defend the principles of freedom and democracy."

While Dudamel is not a composer like Bernstein, his commitment to education and his advocacy for new music — both pillars for Borda and her team in California — have been as unfaltering as his great predecessor’s.

A biologist at the California Academy of Sciences’s Steinhart Aquarium, Mr. Perkins belongs to that unfaltering set — hospital personnel, firefighters, point guards — whose work pauses for no holiday.