placid Synonyms

unruffled tranquil still even-tempered quiet equable mild composed good-tempered undisturbed steady peaceful phlegmatic temperate relaxed restful serene smooth gentle imperturbable untroubled collected calm coolheaded unemotional self-controlled unaffected unflappable unexcited stormless unflurried stolid laid-back stoic unflustered stilly stiller unmoved glasslike unmoving nonbelligerent nonviolent mild-mannered unworried levelheaded level-headed easygoing unsurprised at peace unalarming