lionhearted (adj.)

• bold
• brave
• chivalric
• chivalrous
• courageous
• dauntless
• fearless
• gallant
• greathearted
• hardy
• heroic
• intrepid
• knightly
• manful
• manly
• soldierlike
• soldierly
• stalwart
• stout
• stouthearted
• unafraid
• undaunted
• valiant
• valorous