dead set on (adjective) firm: unalterable, definite
Sinonime: abiding,
adamant,
bent,
bound,
consistent,
constant, dead set on,
determined,
enduring,
established,
exact,
explicit,
fixed,
flat,
going, hang tough,
inflexible,
intent, never-failing,
obdurate,
persevering,
persistent,
prevailing,
resolute, resolved,
set,
settled,
specific,
stable, stand pat,
stated,
staunch,
steadfast,
steady, stipulated,
strict,
strong,
sure,
tenacious,
true, unbending, unchangeable, undeviating, unflinching, unqualified, unshakable, unshaken,
unwavering,
unyieldingAntonime: alterable,
changeable,
indefinite,
irresolute