3
begin with(expression, go, start, FRST, frst)
2
aboriginal(adjective, feature, quality, which)
2
need(verb, action, doing, affair)
2
thirdly(adverb, first, foremost, first off)
1
antecedence(noun, start, begin, prime, first)
1
antecedently(adverb, how, when, where)
1
archetypically(adverb, how, when, where)
1
archly(adverb, how, when, where)
1
begin(verb, action, doing, affair)
1
beginning(noun, start, begin, prime, first)
1
beginningly(adverb, how, when, where)
1
cardinality(noun, start, begin, prime, first)
1
causally(adverb, how, when, where)
1
celibately(adverb, how, when, where)
1
cue(noun, start, begin, prime, first)
1
demiurgically(adverb, how, when, where)
1
downcastly(adverb, how, when, where)
1
earlier(adverb, how, when, where)
1
elementarily(adverb, how, when, where)
1
eminently(adverb, how, when, where)
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APASmart Define. (2015). firstly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/firstly/thesaurus/related
ChicagoSmart Define. 2015. "firstly thesaurus" https://smartdefine.org/firstly/thesaurus/related (accessed September 20, 2026).
HarvardSmart Define 2015, firstly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/firstly/thesaurus/related>.
MLASmart Define. "firstly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/firstly/thesaurus/related>