staunchness       
noun [ U ] uk/ˈstɔːntʃ.nəs/ us/ˈstɑːntʃ.nəs/
 坚决,坚定;忠诚,忠实
the fact or quality of being strongly loyal in supporting a person, organization, or set of beliefs or opinions
  I admire her staunchness and fidelity. 我钦佩她的坚定和忠诚。 
 With a staunchness imbued in them since childhood, the family just carried on.  由于从小就被灌输了坚定的信念,这个家庭还在努力地维持。 
 See: staunch
 - More examples
 - He was a tower of staunchness in the face of civil and religious threats.
 - I admire the resilience, the staunchness, the sheer determination, and courage of the people do this job week in week out.
 - I cannot emphasize too strongly the staunchness of his attitude in discussing these matters.