From Longman Dictionary of Contemporary Englishunflinchingun‧flinch‧ing /ʌnˈflɪntʃɪŋ/ adjective CONTINUE/NOT STOPnot changing or becoming weaker, even in a very difficult or dangerous situation unflinching courage —unflinchingly adverb
Examples from the Corpus
unflinching• His bold, unflinching approach to racing has won him a devoted following, especially in his home country.• Every song has an unflinching backbeat, a droll lyric and a concise guitar solo smack-dab in the middle.• an unflinching description of human suffering• This unflinching march to the brink does not make it inevitable that war will begin the moment the deadline expires. 