1) Adirondack lake 2) Calm 3) Calm and unruffled 4) Calm-natured 5) Calm, tranquil 6) English boy name 7) Free of troubles 8) French word used in English 9) Lake name of two olympics 10) Masculine given name 11) Not easily irritated 12) Not easily upset or excited 13) Opposite of turbulent 14) Peaceful Found on https://www.crosswordclues.com/clue/placid
Plac'id adjective [ Latin placidus , originally, pleasing, mild, from placere to please: confer French placide . See Please .] Pleased; contented; unruffied; undisturbed; serene; peaceful; tranquil; quiet; gentle. 'That placid aspect and meek regard.' Milton. ... Found on http://www.encyclo.co.uk/webster/P/98
quietadjective (of a body of water) free from disturbance by heavy waves; `a ribbon of sand between the angry sea and the placid bay`; `the quiet waters of a lagoon`; `a lake of tranquil blue water reflecting a tranquil blue sky`; `a smooth channel crossi... Found on https://www.encyclo.co.uk/local/20974