64 entries under adverb topic. ×

16
previously(back, late, earlier, then)
16
once(adjective, past, earlier, precede)
15
before(late, now, earlier, then)
9
heretofore
7
already(earlier, precede, before)
7
earlier
7
erstwhile(earlier, precede)
7
at one time(expression, idiom)
5
historically
4
beforehand
4
beforetime(earlier, precede, archaism)
4
erst
4
ahead
4
anciently
4
hitherto
4
then
4
time
3
antecedently
3
in the past(verb, expression, phrasal verb)
3
long ago(expression, idiom, the past)
11 years ago|7k views|share |citing 
APASmart Define. (2015). formerly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/formerly/thesaurus/synonyms
ChicagoSmart Define. 2015. "formerly thesaurus" https://smartdefine.org/formerly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, formerly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/formerly/thesaurus/synonyms>.
MLASmart Define. "formerly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/formerly/thesaurus/synonyms>