The Collaborative International Dictionary of English v.0.48:
Stout-hearted \Stout"-heart`ed\ (stout"h[aum]rt`[e^]d), a. Having a brave heart; courageous. -- Stout"-heart`ed*ness, n. [1913 Webster]WordNet (r) 3.0 (2006):
stoutheartedness n 1: the trait of having a courageous spirit [ant: faintheartedness, faintness]