5
steadfastly(adverb, tenaciously, loyally, stalwartly)
4
diligently(adverb, thoroughly, carefully, meticulously, resolutely)
4
deliberately(adverb, severely, thoroughly, fully, precisely)
4
firmly(adverb, absolutely, very, really, thoroughly)
4
persistently(adverb, resolutely, tenaciously)
4
steadily(adverb, resolutely)
4
tenaciously(adverb, resolutely, tenaciously)
4
tirelessly(adverb, resolutely, tenaciously)
4
to the letter(expression, idiom, adverb, really, thoroughly)
4
trustworthily(adverb, reliably)
4
truthfully
4
verbatim
3
doggedly(adverb, resolutely, tenaciously)
3
indefatigably(adverb, resolutely, tenaciously)
3
obediently(adverb, piously, obediently)
3
acquiescently(adverb, obediently)
3
aspiringly(adverb, expect, hopefully, optomism)
3
best regards(expression, idiom, respect, faith, sincerity)
3
closely(adverb, just, thoroughly, precisely, carefully)
3
compliantly(adverb, obediently)
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APASmart Define. (2015). faithfully thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/faithfully/thesaurus/synonyms
ChicagoSmart Define. 2015. "faithfully thesaurus" https://smartdefine.org/faithfully/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, faithfully thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/faithfully/thesaurus/synonyms>.
MLASmart Define. "faithfully thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/faithfully/thesaurus/synonyms>