fearless

英['fɪəlɪs] 美['fɪrləs]

2. possessing or displaying courage; able to face and deal with danger or fear without flinching;: "Familiarity with danger makes a brave man braver but less daring"- Herman Melville; "a frank courageous heart...triumphed over pain"- William Wordsworth; "set a courageous example by leading them safely into and out of enemy-held territory"

4. invulnerable to fear or intimidation;: "audacious explorers"; "fearless reporters and photographers"; "intrepid pioneers"