steadfast
adjective
[ ˈstɛdfɑːst ]
• resolutely or dutifully firm and unwavering.
• "steadfast loyalty"
Similar:
loyal,
faithful,
committed,
devoted,
dedicated,
dependable,
reliable,
steady,
true,
constant,
staunch,
trusty,
firm,
determined,
resolute,
stalwart,
stout,
relentless,
implacable,
single-minded,
unchanging,
unwavering,
unhesitating,
unfaltering,
unswerving,
unyielding,
unflinching,
inflexible,
uncompromising,
Origin:
Old English stedefæst ‘standing firm’ (see stead, fast1).