Undisturbed by tumult or disorder; calm or quiet. See Synonyms at calm.
Satisfied; complacent.
[Latin placidus, from placēre, to please; see plāk-1 in Indo-European roots.] pla·cid'i·ty (plə-sĭd'ĭ-tē), plac'id·ness (plās'ĭd-nĭs) n., plac'id·ly adv.
Plac·id (plās'ĭd) A lake of northeast New York in the Adirondack Mountains. It is a noted winter sports center.