102 entries under adverb topic. ×

4
doubtfully(dishonestly, affectedly, insincerely, untruthfully)
4
furtively(false, lie, manner, doubtfully)
4
sharply(false, lie, manner, doubtfully)
4
shiftily(false, lie, manner, doubtfully)
4
slickly(false, lie, manner, doubtfully)
4
slyly(false, lie, manner, doubtfully)
4
sycophantically(false, lie, manner, doubtfully)
4
unctuously(false, lie, manner, doubtfully)
4
underhand(false, lie, manner, doubtfully)
4
underhanded(false, lie, manner, doubtfully)
4
untruly(dishonesty, manner, falsehood)
4
untruthfully(doubtfully, dishonestly, affectedly, insincerely)
3
slily(false, lie, manner, doubtfully)
2
ambiguously(doubtfully, dishonestly, affectedly, insincerely)
2
askance(doubtfully, dishonestly, affectedly, insincerely)
2
behind one's back(expression, doubtfully, dishonestly, affectedly)
2
disloyally(doubtfully, dishonestly, affectedly, insincerely)
2
faithlessly(doubtfully, dishonestly, affectedly, insincerely)
2
questionably(doubtfully, dishonestly, affectedly, insincerely)
2
traitorously(doubtfully, dishonestly, affectedly, insincerely)
10 years ago|1.9k views|share |citing 
APASmart Define. (2016). sincerely thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sincerely/thesaurus/antonyms
ChicagoSmart Define. 2016. "sincerely thesaurus" https://smartdefine.org/sincerely/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sincerely thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sincerely/thesaurus/antonyms>.
MLASmart Define. "sincerely thesaurus" 30 March 2016. Web. 28 September 2026. <https://smartdefine.org/sincerely/thesaurus/antonyms>