Foolish or unwise.
Strong in the face of fear; courageous.
Making a fine show or display.
After braving tricks on the high-dive, he braved a jump off the first diving platform.
To encounter with courage and fortitude, to defy, to provoke.
Not noble; ignoble; base.
Of a metal, being at the lower end of the electrochemical series, i.e. oxidising readily.
To make (someone or something) no longer noble