From The Collaborative International Dictionary of English v.0.48 :
Resoluteness \Res"o*lute*ness\, n. The quality of being resolute. [1913 Webster]From WordNet (r) 3.0 (2006) :
resoluteness n 1: the trait of being resolute; "his resoluteness carried him through the battle"; "it was his unshakeable resolution to finish the work" [syn: resoluteness, firmness, firmness of purpose, resolve, resolution] [ant: irresoluteness, irresolution]