subdued
1 chastened, crestfallen, dejected, downcast, down in the mouth, grave, out of spirits, quiet, repentant, repressed, restrained, sad, sadder and wiser, serious, sobered, solemn
2 dim, hushed, low-key, muted, quiet, shaded, sober, soft, subtle, toned down, unobtrusive
Antonyms
1 cheerful, enthusiastic, full of beans (informal) happy, lively, vivacious