The phrase "is bold" suggests that something or someone is brave, daring, or fearless. Synonyms for this phrase include words like audacious, courageous, intrepid, adventurous, confident, daring, fearless, gallant, heroic, plucky, and valiant. These synonyms emphasize the courage, bravery, and adventurousness of someone who is bold. Some other synonyms, like assertive, self-assured, and strong-willed, emphasize the confidence and determination that underlie boldness. Whether you're describing a person who takes risks and faces challenges head-on or an action or statement that is daring and controversial, there are many different ways to capture the essence of what it means to be bold.