What is Dauntless? Dauntless daunt·less ˈdôntlis,ˈdänt-/ [dawnt-lis, dahnt-] Adjective Showing fearlessness and determination. The artwork that this post represents was created by Serenity! Serenity also wrote an amazing blissful inspiring poem for this word intituled Dauntless Dame! Positive Words Research – DAUNTLESS definition – meaning | Dictionary Positive Words