What does placid mean?
Placid means calm, composed, and untroubled, especially when describing a person's expression, behavior, or emotional state. It can also evoke a surface or landscape that is still and undisturbed, as in “a placid lake.” The word carries a controlled, often literary tone and suggests that no outward disturbance is visible; it does not necessarily mean that the circumstances are peaceful or favorable. In everyday use, “calm” and “tranquil” are common substitutes, while “placid” often adds a note of measured composure and quiet dignity. The adjective is commonly paired with expressions such as “placid surface” and “placid tone,” and the related forms “placidly” and “placidity” are also standard. Because placid emphasizes settledness and freedom from agitation, it can be contrasted with words such as “agitated,” “excitable,” and “turbulent.”
adjectiveCalm and untroubled, especially in manner, expression, or appearance. It can also describe a still, undisturbed surface or landscape.
- Calm, composed, and unruffled, especially in a person's manner or expression.
- Still, undisturbed, and untroubled, especially of water, weather, or a landscape.
"Despite the turbulent morning, she remained placid as she answered the questions."
"He maintained a placid expression while the negotiations continued."
"The lake was placid beneath the pale morning sky."
From Latin placidus, meaning “calm” or “peaceful,” placid suggests a serenity that can be both outwardly composed and inwardly untroubled.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of placid
Placid comes from Latin placidus, meaning “calm,” “peaceful,” or “agreeable.” The Latin word is related to placere, “to please,” which also underlies English words such as “pleasant” and “pleasure”; related forms including “placate” and “placatory” belong to the same broader Latin root. English borrowed placid in the early 17th century, initially in senses referring to calmness and gentleness.
Related word forms
How placid is actually used
Placid is standard in formal and literary English. It describes an absence of visible agitation or disturbance but does not necessarily imply that a person or situation is benign or pleasant.