91 entries under tranquil topic. ×

1
relaxed(adjective, calm, quiet, cool, moderate)
1
repressed(adjective, calm, relaxed, easygoing)
1
restful(adjective, quiet, cool, moderate, gentle)
1
satisfied(adjective, quiet, cool, moderate, gentle)
1
sedate(adjective, calm, quiet, cool, moderate)
1
self-assured(adjective, calm, relaxed, easygoing)
1
sensible(adjective, calm, reasonable, relaxed)
1
serene(adjective, calm, quiet, cool, moderate)
1
serious(adjective, calm, cool, relaxed)
1
soothed(adjective, calm, relaxed, easygoing)
1
staid(adjective, calm, cool, relaxed)
1
suppressed(adjective, calm, relaxed, easygoing)
1
sure of oneself(expression, adjective, idiom, calm, relaxed)
1
temperate(adjective, calm, quiet, cool, moderate)
1
together(adjective, calm, reasonable, sensible, relaxed)
1
unconcerned(adjective, calm, quiet, cool, moderate)
1
undisturbed(adjective, calm, quiet, cool, moderate)
1
unemotional(adjective, calm, quiet, cool, moderate)
1
unexcitable(adjective, calm, quiet, cool, moderate)
1
unexcited(adjective, quiet, cool, moderate, gentle)
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APASmart Define. (2011). cool as cucumber thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/cool_as_cucumber/thesaurus/synonyms
ChicagoSmart Define. 2011. "cool as cucumber thesaurus" https://smartdefine.org/cool_as_cucumber/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2011, cool as cucumber thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/cool_as_cucumber/thesaurus/synonyms>.
MLASmart Define. "cool as cucumber thesaurus" 24 May 2011. Web. 29 September 2026. <https://smartdefine.org/cool_as_cucumber/thesaurus/synonyms>