unflinching

un- +‎ flinching

unflinching (not comparable)

1. Without flinching; staying committed despite any difficulty; steadfast.
   • 2017 May 13, Barney Ronay, “Antonio Conte’s brilliance has turned Chelsea’s pop-up team into champions”, in the Guardian‎:

     For all the glories of the Ferguson end-game, Manchester City’s rise and Arsenal’s unflinching desire to finish in the top four and occasionally win the FA Cup, this is now Chelsea’s mini-era.

   • 1837, Catharine E. Beecher, An Essay on Slavery and Abolitionism, page 126

     Can an honest, upright and Christian man, go into these conflicts, and with unflinching firmness stand up for all that is good, and oppose all that is evil, in whatever party it may be found, without a measure of moral courage such as few can command?

• unflinchingly
• unflinchingness