Synonyms of staunchest

1 Syllable
firm, stiff, tough, loyal, strong, sure, stout, sound, true, fast
2 Syllables
stalwart, ardent, steadfast, true-blue, trusty, faithful, stable, constant, liege
3 Syllables
reliable, tried-and-true, trustworthy, allegiant, secure
4 Syllables
inflexible