40 entries under adverb topic. ×

13
unfortunately(sadly, alas, unluckily, disastrously)
11
remorsefully(alas, penitently, repentantly)
8
ruefully(remorsefully, repentantly)
8
contritely(remorsefully, penitently, repentantly)
7
penitently(remorsefully, penitently, repentantly)
7
sorrowfully(unhappily, repentantly)
6
mournfully
5
apologetically(remorsefully, penitently, repentantly)
5
sadly
5
lamentably
5
regrettably
4
repentantly
4
unhappily
3
gloomily
2
ashamedly
2
atoningly
2
dolefully
2
drably
2
grievingly
1
nostalgically
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APASmart Define. (2015). regretfully thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/regretfully/thesaurus/synonyms
ChicagoSmart Define. 2015. "regretfully thesaurus" https://smartdefine.org/regretfully/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, regretfully thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/regretfully/thesaurus/synonyms>.
MLASmart Define. "regretfully thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/regretfully/thesaurus/synonyms>