placid

UK: ˈplasɪd | US: ˈplæsɪd

Definition
  1. adj. calm and peaceful, with little movement or activity

  2. adj. (of a person) not easily upset or excited

Structure
plac <please/calm>id <adjective suffix>plac <please/calm>id <adjective suffix>
Etymology

The word placid traces back to Latin placidus, meaning "gentle" or "calm," derived from placere ("to please"). Over time, it evolved to describe both serene environments and unruffled temperaments. The suffix -id reinforces its adjectival form, emphasizing a state of tranquility.

Examples
  1. The lake was placid under the morning sun.

  2. She maintained a placid demeanor despite the chaos around her.

  3. The placid expression on his face hid his inner turmoil.

  4. The placid waters reflected the surrounding mountains perfectly.

  5. His placid nature made him an excellent mediator in conflicts.