50 entries under tranquil topic. ×

10
calm(adjective, quiet, cool, gentle, cold)
10
imperturbable(adjective, calm, quiet, cool, gentle)
9
cool(adjective, calm, cold, indifferent, restrained)
9
dispassionate(adjective, calm, cool, smooth, cold)
8
patient(noun, adjective, calm, quiet, cool)
6
serene(adjective, calm, quiet, cool, gentle)
5
phlegmatic(adjective, calm, cool, smooth, indifferent)
5
composed(adjective, calm, quiet, cool, gentle)
5
unflappable(adjective, calm, cool, smooth, restrained)
4
self-possessed(adjective, calm, quiet, cool, gentle)
4
unruffled(adjective, calm, quiet, cool, smooth)
3
placid(adjective, calm, cool, smooth, still)
2
easygoing(adjective, calm, smooth, still, peaceful)
2
sedate(adjective, calm, cool, smooth, still)
1
assured(adjective, calm, cool, steady)
1
collected(adjective, calm, cool, cold, indifferent)
1
complacent(adjective, calm, cool, steady)
1
disimpassioned(adjective, calm, cool, steady)
1
equanimous(adjective, calm, cool, steady)
1
hard as nails(expression, adjective, idiom, calm, cool)
<123>
11 years ago|3.8k views|share |citing 
APASmart Define. (2015). stoical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stoical/thesaurus/synonyms
ChicagoSmart Define. 2015. "stoical thesaurus" https://smartdefine.org/stoical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, stoical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stoical/thesaurus/synonyms>.
MLASmart Define. "stoical thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/stoical/thesaurus/synonyms>