Synonyms of peaceful

1 Syllable

meek, still, quiet, smooth, mild, calm, whist

2 Syllables

halcyon, restful, quieter, meekest, clement, steady, tranquil, smoothed, gentlest, friendlier, placid, happy, stiller, quieting, leeward, constant, gentler, whister, level, mellow, neutral, stilling, meeker, smoother, milder, quietest, smoothing, mildest, happiest, bloodless, quieted, dove-like, stillest, smoothest, friendly, stilled, friendliest, gentle, happier

3 Syllables

nonviolent, reserved, soft-spoken, serene, harmonious, equable, leeside, easeful, sociable, arcadian, neutralist, symphonious, composed, idyllic, peaceable, irenic, demulcent, unruffled, collected, untroubled, frictionless

4 Syllables

self-controlled, self-restrained, pacifical, mirrorlike, undisturbed, pacifistic, amicable, peace-loving, placatory, longanimous, lenitive, unresisting, equanimous

5 Syllables

nonbelligerent, uninterrupted, inobtrusive, unperturbable

6 Syllables

uncompanionable, pacificatory