dauntless

adjective

fearless/intrepid/bold

Wiktionary

Pronunciation: /ˈdɔːnt.ləs/ / /ˈdɔnt.ləs/ / /ˈdɑnt.ləs/

adj

Etymology: Etymology tree Old French danterbor. Latin domitō Old French donterbor. Middle English daunten English daunt Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English dauntless From daunt + -less.

Invulnerable to fear or intimidation.
“[...] And yet / Dauntless the slug-horn to my lips I set, / And blew "Childe Roland to the Dark Tower came."”