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What is the Difference Between placid, calm, tranquil, and serene?
Like placid, the words calm, tranquil, and serene all mean "quiet and free from disturbance." Calm conveys a quiet composure that contrasts with surrounding chaos, while tranquil suggests a very deep quietude and peace. Serene is loftier still, carrying a sense of utter peace and happiness. Though placid traces back to Latin placēre, meaning "to please," it isn't always as positive a term as its synonyms. It can imply a lack of agitation rather than a true peace, and it sometimes suggests excessive self-satisfaction or even stupidity.
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A placid lake has a smooth surface untouched by wind. A placid scene is one in which everything seems calm; it may even include a meadow with a few placid cows grazing on it. Someone with a placid personality has an inner peacefulness that isn't easily disturbed. As a personality trait, placidity is surely a lot better than some of the alternatives; however, the word sometimes describes people who are also a bit passive, like those contented cows.
Cite this Entry
“Placid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/placid. Accessed 8 Jul. 2026.
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