Synonyms and related words :
abject, apologetic, bated, chastened, complaisant, conditioned, constrained, contrite, controlled, creamy, damped, dampened, dead, deadened, delicate, dull, dulled, easy, eggshell, flat, gentle, gloss, hedged, hedged about, humble, humbled, hushed, in control, in hand, iridescent, leavened, light, limited, low-key, mellow, mellowy, melted, mild, mitigated, modified, modulated, mollified, mother-of-pearl, muffled, muted, nacreous, nonresistive, nonrigid, opalescent, pale, pastel, patinaed, pearly, penitent, penitential, penitentiary, qualified, quelled, quiet, repentant, restrained, restricted, sad, seasoned, semigloss, sheepish, simple, smothered, sober, soft, soft as putty, soft-colored, soft-hued, somber, sordo, stable, stifled, subdued, subtle, sweet, tempered, tender, touched, whisper-soft