1. (n.) The heart; spirit; temper; disposition.

2. (n.) Heart; inclination; desire; will.

3. (n.) That quality of mind which enables one to encounter danger and difficulties with firmness, or without fear, or fainting of heart; valor; boldness; resolution.

arrogance assurance assuredness audacity backbone balls belief boldness bottle bottom bravery certitude cocksureness confidence confidentness conviction daring dauntlessness determination doughtiness faith fearlessness firmness fortitude gallantry gameness grit guts heart heroism hubris intrepidity mettle mettlesomeness moxie nerve overconfidence oversureness overweening overweeningness persistence pith pluck pluckiness poise pomposity positiveness pride resolution sand security self-assurance self-confidence self-importance self-reliance settled belief spirit spunk spunkiness stamina subjective certainty sureness surety tenacity toughness true grit trust valor