Dauntless means brave and determined, impossible to discourage or intimidate. A dauntless explorer keeps pushing forward through dangerous territory. A dauntless scientist continues her experiments even after countless failures.

Someone who is dauntless cannot be daunted. They don't give up when things get scary or difficult.

You might read about dauntless heroes in adventure stories who face dragons or villains without backing down. But dauntless courage shows up in everyday life too. A student who keeps trying to master a difficult math concept despite frustration shows a dauntless spirit. A person who stands up for a friend being treated unfairly, even when it's uncomfortable, acts with dauntless conviction.

Dauntless describes someone whose courage runs deep and stays strong through ongoing challenges. When you face something that seems impossible and refuse to quit, when obstacles make you work harder instead of giving up, that's when you're being truly dauntless.