Noah Webster's Dictionary (a.) Having a brave heart; courageous.

Multi-Version Concordance Stout-hearted (3 Occurrences) Psalms 76:5 The stouthearted are made a spoil, They have slept their sleep; And none of the men of might have found their hands. (See JPS DBY WBS) Isaiah 46:12 Listen to me, you stout-hearted, who are far from righteousness: (WEB JPS ASV DBY WBS) Amos 2:16 and he that is stout-hearted among the mighty shall flee away naked in that day, saith Jehovah. (DBY)