fearless
adj. B1 Intermediate US //ˈfɪɹɫəs// UK //fˈiələs// fear·less
adj. not afraid of danger, pain, or difficult things. You use this to describe someone who stays calm in scary situations.
adj. showing no fear in the face of danger, pain, or difficulty. Typically used attributively before a noun or predicatively after a linking verb.
The fearless firefighter ran into the burning building.
She felt fearless while skydiving, even though it was her first time jumping from a plane.
The explorer's fearless determination to map the unknown territories inspired a generation of scientists to push beyond the boundaries of established knowledge.
From fear + -less.