1. 大无畏的：unfavourably 不适宜地 | unfearing 大无畏的 | unfeasible 不能实行的

adj

1. invulnerable to fear or intimidation

    e.g. audacious explorers
           fearless reporters and photographers
           intrepid pioneers

    Synonym: audaciousbravedauntlessfearlesshardyintrepid