5
dispassionately(adverb, quietly, casually, calmly, impassively)
5
placidly
4
coolly(adverb, casually, calmly, nonchalantly, composedly)
3
impassively
3
quietly
2
calmly
2
indifferently(adverb, kindly, lightly, moderately, quietly)
2
peacefully
2
serenely
2
steadily
2
unflappably(adverb, casually, calmly, nonchalantly, composedly)
1
aloofly
1
apathetically
1
casually(adverb, calmly, nonchalantly)
1
collectedly
1
composedly
1
forbearingly
1
levelheadedly
1
nonchalantly(adverb, casually, calmly)
1
quiescently
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APASmart Define. (2015). imperturbably thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/imperturbably/thesaurus/synonyms
ChicagoSmart Define. 2015. "imperturbably thesaurus" https://smartdefine.org/imperturbably/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, imperturbably thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/imperturbably/thesaurus/synonyms>.
MLASmart Define. "imperturbably thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/imperturbably/thesaurus/synonyms>