Not glossy; matte:
The state or quality of being the same; identity or uniformity
Monotony is defined as boring sameness or a lack of variety and interest.
A tiresome lack of variety
Tiresome because unvarying
A humming or deep murmuring sound.
Something different; variety:
Find another word for monotone. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for monotone, like: flat, nonmonotonic, sameness, monotonic, droning, staccato, breathy, tone, high-pitched, humdrum and monotonousness.