形容詞 intrepid:

1. invulnerable to fear or intimidation
   同義詞：audacious, brave, dauntless, fearless, unfearing

1. He is not really satisfied with his intrepid action.
   他沒有真正滿意他的無畏行動。

in.trep.id

adj.（形容詞）
Resolutely courageous; fearless.See Synonyms at brave
勇猛的：堅定勇敢的；無畏的參見 brave

來源：
Latin intrepidus
拉丁語 intrepidus
in- [not] * see in-
in- [不] *參見 in-
trepidus [alarmed]
trepidus [受驚的]

【引伸】
in.trepid.ity
intrep.idly
adv.（副詞）