IPA: /ˈplæsɪdnəs/
KK: /ˈplæsɪdnəs/
The quality of being calm and peaceful, without disturbance or excitement.
The placidness of the lake made it a perfect spot for meditation.
Placidness → It is formed from "placidus" (from Latin, meaning calm or peaceful) and the suffix "-ness" (meaning the state or quality of). The word "placidness" refers to the state of being calm or peaceful.
Think of the Latin word 'placidus' which means calm, and remember that 'placidness' describes the quality of being calm.