bold meaning, definition, what is bold: not afraid of taking risks and making di...: Learn more. Bold definition: not hesitating or fearful in the face of actual or possible danger or rebuff; courageous and daring.. See examples of BOLD used in a sentence. Someone who's bold is daring and brave. You might show how bold you are by climbing onto the roof of your house, or by speaking up when you see someone being treated unfairly. Learn about Bold its meaning, usage, and significance. Enhance your vocabulary with detailed insights on Bold.