Synonyms of unfaltering

1 Syllable
set, firm, sure, bound
2 Syllables
surer, stubborn, mulish, steadiest, hellbent, steadier, steadfast, nonstop, steady, surest
3 Syllables
enduring, fireball, unflagging, stiff-necked, tireless, unflinching, undaunted, unshrinking, undismayed, unfailing, pigheaded, unswerving, unwearying, steady-going, abiding, untiring, continuous
4 Syllables
unretiring, unabated, unqualified, purposeful, unwavering, resolute, unalarmed, undeterred, unflappable, purposive, never-failing, unquestioning, wholehearted, persevering, determined
5 Syllables
unhesitating, undiscouraged
6 Syllables
indefatigable