- The definition of placid is calm or quiet.
An example of placid is a still lake in the middle of a forest.
Origin: L placidus, akin to placere, to please
Used by arrangement with John Wiley & Sons, Inc.
- Undisturbed by tumult or disorder; calm or quiet. See Synonyms at calm.
- Satisfied; complacent.
Origin: Latin placidus, from placēre, to please; see plāk-1 in Indo-European roots.
- pla·cidˈi·ty , placˈid·ness noun
- placˈid·ly adverb