The word "un-daunted" refers to someone who is brave, courageous, and undeterred by challenges or obstacles. The opposite of this word is "daunted," which means feeling fearful, intimidated, or discouraged. Other antonyms for "un-daunted" might include words like afraid, shy, timid, or cowardly. These words describe individuals who lack the confidence or courage to face their fears and push through difficult situations. In contrast, those who are un-daunted are willing to take risks and pursue their goals despite the potential for failure or setback. Ultimately, it is through facing and overcoming adversity that one can build resilience and confidence and become truly un-daunted.