placid

adjective

plac·​id ˈpla-səd 

: serenely free of interruption or disturbance

placid skies

a placid disposition

also : complacent sense 1

placidity

pla-ˈsi-də-tē 

plə-

noun

placidly

ˈpla-səd-lē 

adverb

placidness noun

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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.

Synonyms

• calm
• collected
• composed
• cool
• coolheaded
• equal
• level
• limpid
• peaceful
• possessed
• recollected
• sedate
• self-composed
• self-possessed
• serene
• smooth
• together
• tranquil
• undisturbed
• unperturbed
• unruffled
• unshaken
• untroubled
• unworried

Choose the Right Synonym for placid

calm, tranquil, serene, placid, peaceful mean quiet and free from disturbance.

calm often implies a contrast with a foregoing or nearby state of agitation or violence.

the protests ended, and the streets were calm again

tranquil suggests a very deep quietude or composure.

the tranquil beauty of a formal garden

serene stresses an unclouded and lofty tranquility.

watched the sunset of a serene summer's evening

placid suggests an undisturbed appearance and often implies a degree of complacency.

remained placid despite the criticism

peaceful implies a state of repose in contrast with or following strife or turmoil.

grown peaceful in old age

Examples of placid in a Sentence

a person with a sunny, placid disposition

the placid surface of the lake

Recent Examples on the Web

This public beach is surrounded by water on all sides and features a cove with placid waters that are great for wading. —Tykesha Spivey Burton, Southern Living, 4 May 2025

The Dalarna region is Sweden at its best, with dense forests speckling the landscape, a web of foot trails, dramatic waterfalls, gentle slopes for hiking and skiing, and placid lakes, including one of the country’s largest, Lake Siljan. —Jeanine Barone, Forbes.com, 1 May 2025

In a rare interview with the Associated Press this week, the outgoing IOC President did acknowledge that the future might not be as placid as the lake that separates the Olympic capital of Lausanne, Switzerland, from Evian, France. —Blythe Lawrence, Forbes, 8 Mar. 2025

Her face is placid and grateful, set in ecstasy or prayer. —Vinson Cunningham, The New Yorker, 1 Nov. 2024

Word History

Etymology

Latin placidus, from placēre to please — more at please

First Known Use

1626, in the meaning defined above

Rhymes for placid

• acid
• antacid

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Kids Definition

placid

adjective

plac·​id ˈplas-əd 

: peacefully free of interruption or disturbance : peaceful, calm

a placid disposition

placidity

pla-ˈsid-ət-ē 

plə-

noun

placidly

ˈplas-əd-lē 

adverb