More quietly synonyms
placidly, very quietly, comfortably, leisurely, peaceably, tranquil, silent, undisturbed, placid, peaceful, untroubled, quiet, calm, serene, at ease, soft, wordlessly, mutely, dumbly, tacitly, stealthily, surreptitiously, subtly, covertly, noiselessly, in silence, sly, noise-free, noiseless, soundless, patiently, soundlessly, easily, without noise, speechless, gradually, privately,