1
in reality(expression, adverb, absolutely, very, really)
1
in truth(expression, adverb, absolutely, very, really)
1
infallibly
1
inflexibly
1
intensely
1
intently(adverb, resolutely)
1
invincibly
1
invulnerably
1
irresistibly
1
legitimately(adverb, absolutely, very, really, exactly)
1
like a bulldog(expression, idiom)
1
like a leech(expression, idiom)
1
loudly
1
lustily
1
mightily
1
perseveringly
1
powerfully
1
pungently
1
purposefully
1
really(adverb, absolutely, very, exactly, certainly)
11 years ago|3.1k views|share |citing 
APASmart Define. (2015). staunchly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/staunchly/thesaurus/synonyms
ChicagoSmart Define. 2015. "staunchly thesaurus" https://smartdefine.org/staunchly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, staunchly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/staunchly/thesaurus/synonyms>.
MLASmart Define. "staunchly thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/staunchly/thesaurus/synonyms>