This adjective describes quickness or swiftness, whether physical speed or mental/emotional readiness. James 1:19 uses it ethically: 'be quick to hear, slow to speak, slow to anger.' Here 'quick' means ready, eager, prompt—not in a hurried sense but in a prepared, attentive sense. Classical usage described fast runners or swift ships, but also hasty or rash thinking. James applies it to disciplined receptivity—the readiness to listen actively.