- placid
- adj1. quiet, quiescent, calm, tranquil, serene, undisturbed, halcyon, Brit. Dial, (of places) bonny; still, stock-still, Chiefly Literary. stilly; unmov-ing, unmoved, immovable, immobile; motionless, stationary, becalmed.2. peaceful, peaceable, pacific, restful, reposeful; sleepy, sleeping, slumbering, slumberous, slumbery, dozing, dozy, drowsing, drowsy, somnolent; inactive, latent, dormant, dormient.3. composed, collected, self-possessed; steady, equable, level, level-headed; even-tempered, temperate, moderate, cool, cool-headed; unexcited, inex-citable, unruffled, unagitated, unperturbed, imperturbable; unemotional, unimpassioned, unimpassion-ate, impassive, dispassionate; stoical, philosophical.4. reserved, reticent, taciturn, uncommunicative; sedate, meek, mild, gentle.
A Note on the Style of the synonym finder. 2014.