6
gravely
5
seriously
4
soberly
4
solemnly
2
badly
2
calmly
2
demurely
2
earnestly
2
quietly
2
sedately
2
severely
2
stably
2
steadily
1
abstemiously
1
abstinently
1
composedly
1
equably
1
grimly
1
imperturbably
1
peacefully
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APASmart Define. (2015). staidly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/staidly/thesaurus/synonyms
ChicagoSmart Define. 2015. "staidly thesaurus" https://smartdefine.org/staidly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, staidly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/staidly/thesaurus/synonyms>.
MLASmart Define. "staidly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/staidly/thesaurus/synonyms>