resolute synonyms

set true strong decided serious firm established independent determined fixed constant settled steady resolved loyal persistent faithful enduring stubborn adamant uncompromising dogged purposeful inflexible staunch unchanging obstinate unyielding persisting tenacious irreconcilable immovable immutable indefatigable intransigent inveterate unwavering steadfast obdurate persevering unflagging unshakable unfaltering adamantine set upon die-hard unshaken self-reliant bent on pertinacious strong-willed single-minded

brave courageous valiant intrepid